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4) Dry prairies near San Felipe on the Brazos; Febr. & March. It is very possible that this may be one of the already described species, but it appears to me to differ from all as they are described in Torr & Gr. Flora. I could compare it only with {Vesicaria} grandiflora. This has a stallate pubescens; greenish, canescent [drawing] sepals, obcordate petals, sagittate anthers; V. repanda has subulate filaments; V. angustifolia has a stellate pubescence, and leaves attenuated at base; V. nutallii has leaves narrowed at base, and a different silicle, V. gracilis has subulate filaments, leaves narrowed at base, seeds not margined and V. shortii has very short styles.

From the examnation of 2 specimens of V. grandiflora collected also west of the Brazos, I am enabled to add the following characters: sepals greenish stellately canescent, like the whole plant; anthers sagittate with spreading lobes; cauline leaves sessile, cordate and somewhat dilated at base. 218. Nasturtium tanacetifolium Hook & Arn. Sandy open places in the millcreek bottom. Febr and March. — Siliques incurved in some specimens nearly erect in others patulous! In specimens collected in a sterile prairie we find the leaves less divided. 219. Sisymbrium canescens Nutt var. α. Sterile sandy places in prairies west of the Brazos; a very canescent form. 220. Polygala alba (P. beyrichii Torr & Gr. Prairies west of the Brazos; lower leaves frequently obovate spathulate. 221. Hypericum maculatum Walt. Open woods and margin of woods from Galveston to the Colorado; May. 222. Paronychia dichotoma Nutt On Sandstone rocks near Industry; Septemb & Octobr 223. Arenaria pitcheri Nutt. Prairies west of the Brazos; March. Petals twice the length of the calyx emarginate. 224 Ptelea trifoliata L. β mollis T & Gr. Along water courses west of the Brazos, April. Also near Houston. 225. Aesculus pavia L. β discolor Torr & Gr. Thickets along the banks of Millcreek, west, of the Brazos; March. 226 Sapindus marginatus W. {Willd.} Fertile woods near streams, west of the Brazos, fruit ripe in August. Popularly called "Wild Chinatree"; it grows about one foot in diameter. 227. Rhamnus caroliniana Walt. Small trees forming thickets on wet places in the Prairie west of San Felipe, fl. in May. — Var. β parvifolia leaves only 2 to 3 inches long, with 7 to 9 pairs of lateral veins, pubescent on the ribs below; leaves and flowers crowded. 228. Rhamnus lanceolatus Pursh in thickets along the Millcreek; fl. in March. 229. Tephrosia onobrychoides Nutt San Bernadio's Prairie, west of San Felipe, in May. — Stem assurgent one to two feet high; pubescence rusty, short, appraised; calyx teeth short hispid, not villous, as in the variety sent from Houston, No. 32. 230. Astragalus caryocarpus Ker. Prairies west of San Felipe, April. 231. Lupinus subcarnosus Hook. Prairies west of the Brazos, April. — Branching from the base; from 5 to 15 inches high; flowers smaller, paler, inflorescence more silky or lanuginous than in the nearly related L. texensis Hook, of which we find a a few specimens mixed with those of L. subcarnosus. 232. Cassia chamaecrista L. } cinera Torr & Gr. Sandy places in the woods along the Colorado river Aug. Perhaps a distinct species, characterized not only by the characters noted by Torrey & Gray, Flor I, p. 396 but also by the stipitate gland on the petiole below the lowest pair of leaflets, the setaceous glands between the 4 or 6 lower pairs (wanting in C. chamaecrista) and by the indistinct (not very plain, as in C. ch.) veins of the acute (not obtuse)

5) leaflets. The five alternate anthers are shorter. 233. Algarobia glandulosa T & Gr. Sparsely or forming thickets in low prairies on the Colorado. fr. end of August. — This shrub or small tree, 10 feet high, stem 6 to 8 inches thick, called in Texas "Muskit-tree" is first found as a small low shrub in the San Bernardo prairie west of San Felipe, and becomes larger and more frequent westwardly. It characterizes a new vegetation; in the muskit-thickets on the Colorado a small Echinocactus (E. setispinus) is common; and on their boarders is found the singular Opuntia putescens (No. 244); and on naked places in the neighborhood, especially on deserted anthills a large Echinocactus (E. gyracanthus) often a foot in diameter, strikes the traveler with the impression of a tropical vegetation. F. Lindheimer.

The leaflets in our specimens of A. glandulosa are partly linear, 1 line wide, often oblong, 1 1/2 to 2 lines wide but also elliptical, obluse, half as wide as long; sometimes all these forms on the same specimen. This plant is very remarkable on account of the drupaceous structure of the fruit; the inner chartaceous or nearly bony part of the pericarp (or legume) separates from the pulpy parenchyma and encloses each seed separately, forming as many nuclei as there are seeds. This structure appears to occur amongst the Leguminosae only once more, in Detarium Juss from Africa, which however is oneseeded, and where the pericarp is said to be entirely fleshy. 234. Schrankia angustata Torr & Gr. Sandy prairies between the Brazos & Colorado, May to Aug. 235. Darlingtonia brachyloba DC. var. glandulosa T & Gr Wet prairies west of the Brazos, fr. in July. — We have also seen the slender variety var. illinoensis from the seacoast of Texas. 236. Prunus glandulosa Hook Low shrubs on sandy hills in the Prairies west of the Brazos. fl. in Febr. — "Fruit yellowish red as large as a middlesized cherry." Lindh. Therefore probably a Prunus. But on one of our specimens in a half grown fruit entirely juiceless and still covered with tomentum of the ovary. 237. Prunus gracilis n.sp. Ramis subinermibus; foliis oblongo-lanceolatis, infra supraque acutis, grosse et irregularites serratis (serratun's plerumque patentibus) supra glabriusculis, sublus cum petiolis brevibus eglandulosis tonetoso pubescenitbus stipulis setaceis, glandulosis, petiolos aequantibus; umbellulis 2-3 floris; pedicellis calycibusque pubescentibus ; calycis laciniis ovatis, obtusiusculis, petalis orbiculatis, ovario glabro.

In open post oak woods (Quercus obtusiloba) west of the Brazos in small groups, fl. in March. — It is Prunus chicasa, var. normalis of Torr & Gr. but I take it to be a distinct species, characterized by the small (about 1 1/4 inch long), very pubescent leaves, with mostly spreading serratures; the very short (1 to 1 1/2 lines long) and not glandular petioles; the small flowers and pubescent (and not glandularly serrate acutish) lobes of the calyx. We find no notice of the fruit in Mr Lindheimer's labels, where it is called "Post oak-plum". On our specimens are a few fruits of the size of the fruit of Cerasus serotina, perhaps not full grown, though of a blackish colour. — The species appears intermediate between Prunus chicasa and P. glandulosa; it is as low a shrub as this one, with nearly as small leaves, but is is a plant with much slender branches and with elegantly shaped leaves. —

238 Oenothera serrulata Nutt Oe. spinulosa Torr & Gr. nearly smooth with large flowers, petals often 1 inch and even more in length; stems many from the same root mostly simple or branching at base. — Sandy dry or moist prairies west of the Brazos, May & June. 239. Gaura exaltata n.sp. caule erecto elato, paniculato-ramosissimo, adpresse pubescente, foliis lanceolatis s. linear--lanceolatis, supra infraque angustitatis,

6. sparsim repando-denticulatis, adpresse pubescentibus, floribus in spicis laxis ramosis sessilibus; bracteis linearibus deciduis; calycis segmentis tubum plerumque superantibus, ovario canescente multo longioribus; petalis spathulatis longe uniquiculatis calyce et staminibus brevioribus; nuce sessili, ovata, subacuta, 4 carinata, nervis 4 inconspicuis intermediis notata.

Prairies at the margin of woods between Brazos & Colorado, also west of Houston; fl. August & September. — 6 to 9 feet high, often exclusively covering large spaces of ground. Near Gaura biennis but taller, more branching, leaves narrower flowers much smaller, petals spathulate and fruit shorter and thicker. — 240 Gaura drummondii Torr & Gr. Naked soil, roadsides in prairies, ravines or abrupt steep banks of rivulets, west of the Brazos; May. — Stem and leaves canescently hairy; leaves in our specimens mostly undulate and sinuate-dentate; calyx-tube as long as the ovary segments mostly much longer; petals deep red in the dry specimens. The very peculiar shape of the fruit is well descrbed by Torrey & Gray in Flora. 241. Gaura parviflora Dougl On deserted anthills in the sandy prairies between Brazos & Colorado. July & August. — The ovaries as well as the fruits in all our specimens are not glabrous, but canescently pubescent, and the fruits acutish. 243 Jussiaea occidentalis Nutt along margins of rivulets, where they are not shaded between the Brazos & Colorado. July. — Petals obcordate. 242 Stenosiphon virgatus Spach "high prairies on the Colorado, often on rocky soil sparsely, 244. Opuntia frutescens n.sp. Caule erecto ramoso, teneti, ligneo, cenereo, duplicites aculeato; ramis junioribus articulatis, fragilibus, subcylindricis, angulatis, brevioribus, viridibus, flores in aculeoorum fasciculis lateralites s. sub apicem gerentibus; fructibus obovatis, carnosis (scarlatinis) fasciculis aculeorum piliformium obsitis; semina pauca (alba) compressa, reniformia includendibus, persistentibus, proliferis.

This remarkable Cactus was collected as stated above near the Muskit-thickets (No. 233) on the Colorado, in August; it acquires a hight of from 3 to 5 feet, has a branching ligneous stem, covered with a light gray bark and sometimes even with lichens. It bears bunches of small hairlike spines, with one larger one (4-6 lines long) which disappear on the oldest stems. The wood is close grained and very hard. The younger branch are green and angular and bear the last, short (about 1 inch long) articulations, which very easily break off; these bear when young, as the other Opuntia — short terete subulate leaves, and in the axillis of these one larger spine and above this a bunch of smaller ones. — Our specimens are not in flower, but are covered with the obovate umbulicate scarlet fruits, about 8 lines long, which are fleshy but not juicy and contain very few (2 to 5) white compressed seeds. — A most remarkable circumstance is that the fruits frequently bear one or more (even 4 or 5) new branches at the upper bunches of spines; they either fall off with these branches, or become persistent dry up and finally form part of the stem.

This species is apparently near Opuntia fragilis Nutt but is distinguished by the high ligneous stem, the mostly lateral position of the flowers and the fleshy, proliferous fruit.

Besides this Mr Lindheimer has sent us 7 other Cactaceae, most of them in living specimens.

7) Opuntia without fruit or flower, probably O. vulgaris Mill, several feet high with large obovate joints and few spines, from the Brazos. Opuntia, perhaps O. missouriensis DC low, with smaller orbicular joints, with numerous large straight brown spines and bunches of also brown prickles, which are larger than in the other species; flowers yellow, in May. On sterile prairies, 12 miles west of Houston. Mammillaria similis n.sp. caespitosa, axillis glabris, tuberculis ovatis apice spiniferis tomento circudatis; floribus sparsis, baccis globosis scarlatinis.

On sandstone rocks near Industry, west of the Brazos. — Evidentally very near M. simplex, but caespitose, forming tufts of 6 to 12 inches diameter; tubercules with about 12 white (not red) radiating spines, flowers not seen; berries scarlet of the size of a large pea, rather dry, with numerous black subglobose scrobiculate seeds with and elongated white hilum. Mammillaria subcata n.sp. caespitosa, tuberulis ovais erioribus sulco prolifero superne notatis, apice spiniferis, spinis rectis radiantibus, cinereis, in plantis senioribus spina centrali subrecurva majore; floribus centralibus, fasciculatis; fructibus oblongis, floris rudimentis coronatis, virescentibus, polyspermis.

With the foregoing; but a and similar to it, but a much larger plant! I would take it without hesitation for M. vivipara Haw it that was not described every where as having bearded tubercules! Ours are very spiny; in the young specimens we find 8 to 10 radiating horizontal about equal spines; in the older ones one becomes central, much stouter often 8 lines long, erect or rather curved somewhat backwards. Flowers not seen. Fruits sessile in a cluster in the centre of the plant, surrounded and half hidden by the innermost tubercule, enclosed at the base by a tomentum, about 10 to 12 lines long, oblong, juicy, greenish; full of black, smooth shining seeds, which are compressed on one side toward the hilum.

Echinocactus setispinus n.sp. subglobosus, apice retusus, costis plerumque 13 ac[loss] obliquis, aculeis (15-18) fasciculatis, tenuibus, flexuosis e flavicante fasc[loss] 10-12 inferioribus brevioribus radiantibus, 3 superioribus elongatis; 1-3 [loss]-libus longissimis, erectis; floribus minutis supra fascicularum fa acu[loss]m fasciculos ortis, basi tomento cinctis; sepalis in tubum concretis, spicibus liberis scariosis, late ovatis, acuminatis, margine fimbriatis; fructibus? seminibus ovatis, nigris opacis, minutum tuberculatis.

Common among the Muskit-trees on the Colorado River. — Near Echinocactus tenuispinus Link & Otto, from Brasilia, but distinguished by the somewhat oblique and acute, not straight, obtuse ribs, which show at their bases a transition to the tubercular structure of the Mammillariae; also by the very small flowers. Our specimens are about 2 inches in diameter and 1 1/2 inch high, have 13 (one of them 15) pretty sharp ribs, separated by deep grooves. The spines near the base are shorter, mostly broken off, towards the top they are longer, and flexible; those in the centre of the bunches are longest, (about 15 lines long). We find a few shrivelled up flowers and one incomplete fruit on our specimens. They do not orginate from the clusters of spines, but from an impression in the rib above them. The flowers are about 5 lines long, at base surrounded by a tomentum; the seeds are punciculate, black, not shining.

1) Continuation of Lindheimer's Collection 1844

245. Sedum sparsiflorum Nutt. Naked sandy spots in the San Berndards prairie between Brazos & Colorado, April & May. 246. Galium virgatum Nutt Prairies west of the Brazos, in patches. April. 247. Diodia tricocca Torr & Gr. caespitose in low fertile places in the prairie 16 miles west of San Felipe. June. — The plant is much and irregularly branched, depressed, resembling in habit Hedyotis boscii DC. All specimens examined by us are tricarpellary. 248. Coelostylis texana Torr & Gr. Shady woods along the Millcreek, west of San Felipe. July. 249. Aster drummondii Lindh. In shady moist woods and in thickets along water courses, from Houston to the Brazos to Colorado. — Sept & Octob. — We find the stems of some of our specimens more scabrous than pubescent, and also the leaves less velvety on the lower side, and sometimes nearly smooth on the upper. Involucral scales smooth with ciliate margins, especially the outter ones. Achenia more or less, sometimes only at the top hairy, smoother when ripe. Disc flowers turning red, as in Aster sagittifolius. — Specimens collected in July on the prairie, at the margin of woods are much more tomentose. 250 Chaetopappa asteroides DC Dry prairies west of the Brazos; April to July. 251 Bellis integrifolia Mich Light sandy soil in prairies west of the Brazos with Sedum sparsiflorum & Schrankia angustata : April & May. — The heads are only half as large as in the common forms of this plant, and the rays fewer, but we can not discover any other difference. 252. Solidago angustifolia Elliott Wet prairies and banks of rivulets west of the Brazos; October. — Not at all in brackish swamps and not even always on wet soil, for we have specimens collected on high and dry prairies between Houston and the Brazos, beginning to flower in June. — Inflorescence somewhat scabrous, leaves scabrous on the margin; scales of the involucre acutish, the exterior ones mucronulate, the innermost rather obtuse. Ray flowers in the Brazos specimens 5 to 8, disc flowers 7 to 13; in the Houston specimen ray flowers 6 to 10; disc flowers 10 to 13. Achenia puberulent. 253. Isopappus divaricatus Torr & Gr. Light sandy soil in prairies and open woods west of the Brazos. Aug. & Sept. 254 Isopappus hookerianus Torr & Gr. In patches on sandy prairies and on sandstone rocks on the Colorado. Septemb. — Our specimens are from 6 inches to 2 feet high, mostly branching from the base, but also simple. 255. Grindelia inuloides Willd. In patches in the prairies 30 miles west of San Felipe July & August. — Grows 5 to 6 feet high, branching only above. 256. Calymmandra candida Torr & Gr. Margins of woods and open woods west of the Brazos. April & May.

Note. In the pine woods near Houston Mr Lindheimer collected two or three specimens of new Pterocaulon, which we are sorry not to be able to communicate to the subscribers, but of which we will give at least a description. Pterocaulon leptostachyum, caule herbaceo ramoso, foliis inferioribus l lanceolatis, superioribus linearibus, omnibus undulato-denticulatis supra glabris, subtus albo tomentosis; fasciculis capitulorum sessilibus, in spicam elongatum interruptum congestis; involucri squamis exterioribus lanceolatis, acutis, brevibus, dorso tomentosis, interioribus linearibus elongatis, apice acuminato-setaceo glabriusculo.

Open pine woods near Houston, fl. in Sept. — Easily distinguished from the only other North American species, Pt. pycnostachyum, by the branching stem, linear leaves, interrupted spikes etc, but perhaps too near Pt. interruptum DC. from South America, but apparently distinguished by the narrow undulate-denticulate leaves, which in Pt. interruptum are described as

2) oblong-lanceolate, irregularly dentate. — Our specimens are from 2 1/2 to 3 feet high, more or less branching; spikes 4 to 7 inches long, slender, interruped; glomerules c composing the spike formed below by 3 to 5 or 8, above by fewer heads, mostly sessile, but in one or two instances we find the lowest ones pedicellate; — at the end of the spikes the heads are often single. Pistillate flowers numerous, in many series, perfect ones 2 to 4 in the centre.

257 Silphium scaberrimum Ell. Shady woods west of the Brazos, near Industry. May to July. Obovate or oblanceolate obtuse chaffy scales adhering to the base of the broadly winged somewhat pubescent achenium. 258. Halea ludoviciana Torr & Gr. Sandy open Postoak woods, west of the Brazos, May to August. — From a large perennial rather fleshy root rise many stems 2 to 5 feet high, branching above; lowest leaves rhobmic ovate, or ovate — lanceolate, acute, tapering into a petiole of nearly their own length or shorter; a little higher up the bases of the petioles become widened and clasping as in Silphium perfoliatum, and the upper leaves are entirely connate-perfoliate, without any show of petioles. — Exterior involucre in all our specimens sharply four angled, scales rhombic-oval, acute, on the margin and the inncer side whitish ciliate-pubescent. Ray flowers with a hairy tube (not only involute), tube of disc flowers likewise hairy. 259. Helianthus lenticularis Dougl. In low shady woods and on wet prairies between the Brazos & Colorado; July to Septemb. — In the prairies it is lower, but in the bottom woods it attains the hight of 10 and 12 feet; the lower leaves are 6 to 9 inches long and 5 to 8 inches broad; flowers 2 1/2 to 3 1/2 inches in diameter; achenia oval, thicker than usually in this genus. 260. Helianthus maximiliani Schrad. Prairies, margin of woods, along fences and in deserted fields, in patches together; common from Houston to the Colorado; fl. in October and November; the latest flowering species in Texas. — It grows 4 to 7 feet high, much branched. Our specimens from Houston have a slightly scabrous, those from the Brazos a canescently scabrous involucrum; chaff mostly entire, abruptly acuminate and at the apex pubescent, rarely with two very small lateral teeth. The lowest leaves are slightly petioled, but at both ends long attenuate-acuminate; very slightly repandly denticulate, equally scabrous on both sides. 261. Helianthus asperrimus n sp. perennis, caule erecto simplici, infra glabriusculo, supra hispido; foliis alternis, lanceolatis, subsessilibus integris β. obscure denticulatis, penninerviis, rigida, supra subtusque hispido-apserrimis; capitulis singulis terminalibus β pluribus in axillis foliorum superiorum breviter pedunculatis; involucri squamis lanceolato-linearibus, acuminatis, apice squamosis, canescenti-hispidus floribus disci pubescentibus; acheniis glabris squamis pappi 2 elongatis lanceolato-subulatis fimbriatis.

Covering large patches of the prairies between the Brazos & Colorado; October. — Near H. giganteus Lin but easily distinguished by its great roughness, low growth, simple stem etc; also near H. cinereus Torr & Gr, but apparently distinguished by the narrower, lanceolate featherveinted, not ovate oblong leaves triplinerved leaves, by their great roughness, by the more or less squamose involucre, and by the globrous achenia. Perhaps to near H. maximiliani Schr. but distinguished by

3) its low simple stem, more canescent, broader and less squamous scales of involucre. —The simple stems rise from a thickened rhizoma 2, 3 or 3 1/2 feet high; in the flowering plant they are naked below, with larger crowded leaves about the middle and smaller and fewer ones towards the top; leaves contractd at base, but not petioled, in all our specimens conduplicate, and curved backward, mostly entire, sometimes slightly dentriculate, very rough but more so on the upper than on the lower surface. Heads from one to five, but the terminal one with a long (2 to 4 inches) peduncule, the lateral ones with very short (1 1/2 to 1 inch) peduncles. Heads 2 to 2 1/2 inches diameter; involucral scales linear-lanceolate frequently with setaceously acuminate and spreading tips; chaff of the receptacle mostly pubescent, at top abruptly acuminate, with two very small lateral teeth; rays 18 to 21; dis flowers slightly hairy externally, especially near the throat, proper tube short; achenia (unripe) glabrous with 2 lanceolate subulate, chaffy fimbriate scales of their own length. 262. Helianthus grosse-serratus Mart. var. sericeus, banks of rivulets and margin of woods, west of the Brazos; August to October. — This appears to be the original form of this very variable species; stem very smooth and glaucous, leaves rather obtuse at base, coarsely serrate with divaricate teeth, tomentum on the lower side very soft and silky. The involucral scales are nearly smooth and many nerved; chaff mostly entire, acute, but not abruptly acuminate; laciniae of the disc flowers very frequently with a third (middle) nerve.— Near St. Louis several other forms are common; with opposite or alternate leaves, tomentose or only slightly canescent below, with strongly ciliate or nearly smooth scales of the involucrum; but all have leaves with a very acute base and slight and appressed serratus, and narrower, mostly 3-nerved involural scales. 263. Helianthus grosse-serratus Mart. β. scarior. This variety was collected with H. maximiliani, and the specimens of both were mixed. They are readily distinguished however by all the leaves being petioled, more canescent than scabrous on the lower surface, and appresse-serrate (or nearly entire); they are very acute at base, and the stems, through somewahte glaucous, are slightly scabrous throughout. The large single (lower) leaves, laying in the same envelloppe with this and H. maximiliani evidently belong to this species; they are petioled, attenuated at base serrate, and canescent on lower surface.

Helianthus maximiliani, asperrimus, giganteus, and grosseserratus are very near each other. H. grosse-serratus is principally distinguished by the petioled leaves (which are only in one form really coarsely serrate!) and the glaucous smooth or slightly scabrous stem; H. giganteus by the hirsute or pilose stem and leaves; H. maximiliani and H. asperimus by the subsessile leaves which are scabrous and equally green on both sides. — The genus Helianthus is one of the most difficult of all those found in N. America, as we can hardly rely on any one constant character. They are all more or less variable, and there are intermediate forms, which apparently connect the most distinct species.

4) 264. Cosmidium filifolium Torr & Gr. Prairies west of the Brazos, May & June. Perennial! — This ornamental plant grows as far north as the southwestern part of Missouri. — 265. Dysodia tagetoides Torr & Gr. Wet prairies near springs on the declivities of the sandstone hills on the Millcreek; August. — Perennial! Dots of the leaves orange yellow. 266. Palafoxia hookeriana Torr & Gr. Sandy post-oak-woods near Industry in patches; fl in August. — This as well as P. texana DC are annuals. 267. Actinella linearifolia Torr & Gr. On the declivities of sandstone hills near Industry. May & June. — Rays yellow, turning white when fading. 268 & 269. Senecio ampullaceus Hook annuus (? s. biennis?) glaberrimus s. floccosus, caule erecto, fistuloso, striato, superne ramoso; foliis inferioribus obovato-spathulatis, in petiolum decurrentibus, superioribus ovato-lanceolatis, acutis, basi subcordatis, semi amplexicaulibus; omnibus subintegris s. denticulatis; cyma corymbosa s. fastigiata; pedicellis apice demum incrassatis; involucro squamis setaceis, paucis calyculato; radiis 7-9; acheniis strigoso-canescentibus.

var. glaberrimus (No. 268) foliis glaberrimus, angustioribus, plenisque bas; angustatis, integris s. parce dentatis; cynis fastigiatis. involucri squamis linearibus acuminatis, glabris β. floccosus (No. 269) caule foliisque junioribus floccosis, foliis latioribus, superioribus e basi lata cordata acuminatis, saepe grossedentatis; cymis corymbosis, involucri squamis linearibus. acutis s. obtusiusculis, apice barbatis.

In prairies between Brazos & Colorado var. on wet places; β. on loose sandy soil of the deserted ant hills, together with Argemone mexicana Fl. in April. — This we have no doubt is Hooker's S. ampullaceus, though it certainly is an annual or biennial plant as our numerous specimens collected with roots, prove. We can not sufficiently distinguish both forms. The glabrous variety grows in wet soil, is much more slender, with narrower leaves; on a few specimens we can observe a remnant of flocculency. The variety from dry places is much stouter, with broader, thicker and darker green leaves, often whitish below; whole plant more or less floccose; flowers 50 or 60 in each head. 270. Lygodesmia aphylla DC β. texana Torr & Gr. — Prairies, margins of woods, west of the Brazos; June & July. — Root penetrating deep into the soil forming elongated tubers. 271. Pyrrhopappus grandiflorus Nutt Prairies near San Felipe, in groups, but not closely together; — fl in April. — Perennial! — Root slender bearing a few inches below the surface a globose or ovate tuber, similar to the root of Cynthia dandelion DC; leaves rarely oblanceolate, sinuately dentate, commonly runcinate, or pinnatifid, lobes triangular or angulatetoothed, divaricate. Scapes several from one root, 6 to 12 inches high, with or without a bract in the middle; heads as large as in P. carolinianus DC

6) biauriculatis, gynostegium breviter stipitatum multo superantibus, processu fulciformi, acutissimo supra gynostegium horizantaliter incurvo.

Wet meadows of the American bottom, opposite St. Louis.fl. in August. Stems erect, 2 to 3 feel high; leaves 4 to 6 inches long, 2 inches broad, subcordate, upper ones truncate at base, with a sharp mucro, not appressed; light green, but hardly glaucous, very delicately nerved; only the the upper ones quite sessile, the lower ones with a very short petiole; umbells with many lanceolate linear bracts, which are mover conspicuous than in most other species; pedicellls stout, sepals acuminate, green; corolla externally green, internally reddish cinereous, laciniae about 5 lines long, ovate lanceolate, acutish, longer than the cuculli; cuculli purple\ish, much longer ; though not twice as long as the shortly stipitate gynostegium, ovate, hardly lobed, but crenulate or emarginate; horn arising from the base very acute, curved horizontally over the gynostegium; cusps of the anthers ovate, acute, covering the stigma.

Very near {Asclepias} amplexicaulis Mich, for which plant I took it, till a much larger, and stouter, erect plant; leaves less cordate, not amplexicaulis clasping nor oppressed, hardly glauceous, strongly mucronate, more delicately veined; peduncles are petioles stouter, flowers nearly twice as large; sepals more acute and larger in proportion to the corolla; cuculli much longer than the gynostegium, with a long, acute, horizontal not short nearly erect-obtusish horn; pollen masses nearly than times as large. 273 Gonolobus ? parviflorus n.sp. caulibus basi ramosis adscendentibus s. prostratis, hirsuto-pubescentibus; foliis ovatis, cordatis, acutisculis, breviter petiolatis, utrinque puberulis; pedunculis brevissimis, s. subnullis; floribus geminis; pedicellis basi bractea sublata suffultis, petiolo plerumque longioribus; calycis hirstui lobis ovatis hirsutis acutis, corollae laciniis ovatis, obtusis, extrorsum subpilosis, introsum glabris (ex viridi purpureis); corona staminea cyathiformi, gynostegii basin cingente, 5-loba, lobis rotundatis crassiusculis, margine tenuiori cinotis, supra processu lineari scaphoideo arcuato ornatis; folliculis ovatis, utrinque attenuatis coriaceis, muricatis, pubescentibus; seminibus (rufis) orbiculatis, marginatis, comosis.

In open post oak woods near Industry, on sandy soil, from April to June. — This is apparently no Gonolobus proper, and is on one side nearly related with Lachnostoma prostratumDne, and on the other still nearer with Chthamalia biflora Dne and Chth. pubiflora Dne. But the very peculiar structure of the corona might characterize it as a distinct genus, if it should be settled, that any diversity of form of this organ would constitute a generic difference in this family. However as Mr Decaisne himself, the monographer of this family in DeCandolle's Prodromus

7. includes Gonolobus hirsutus Mich and G. macrophyllus Mich with their campanulate corona with 10 long subulate and 5 short triangular teeth together with G. laevis Mich with its annular five lobed corona, in the same genus, Gonolobus, of which he says: "corona staminea —— annuli formis —— lobis integris" — we not only consider ourselves authorized not only to refer our plant also Gonolobus, but we also believe that some species at least of his genus Chthamalia (probably the North American ones) must be restored to your the same genus.

Our plant sends from a perennial some what tuberous root mostly several weak stems, 6 to 15 inches high, branching at base, ascending or apparently prostrate; leaves opposite, cordate, with an open sinus, 1 to 2 inches long, 1/2 to 1 1/2 inches broad, on very short (2 to 4 lines long) petioles; uppermost leaves smaller nearly sessile, ovate-lanceolate and often more truncate than cordate at base. Flowers mostly towards the top of the stem and branches, with pedicells longer than the petioles; only where they occur lower down the stem the pedicells are occasionally shorter than the pedicells. There is a common peduncle, sometimes a line long, but mostly only half a line long; always bearing two pedicells with 2 subulate bracts at their base. The greenish purple corolla is very slightly hairy outside, and perfectly smooth within about openly campanulate, with the lobes spreading, about 2 lines in diameter. The corona is cup shaped, 5 lobed, the lobes rounded, fleshy, with a thinner margin and in the middle with an incurved processus, which [drawing] reminds us of an Asclepias; this processus is connected at base with the middle nerve of the anther, and is free and incurved at the obtuse point where it is on its upper (or inner) surface excavated, something like a spoon. The membranaceous cusps of the anthers are triangular, acute and cover a part of the very obtusely 5-angular somewhat convex stigma. The extremely small horizontal pollen masses are oblong slightly curved, and hardly attenuated at their exterior (attached) end.

This plant appears to be very near Chthamalia biflora Dne from Red River and only distinguished from it by the petioles being shorter than the pedicells, by the smooth inner surface of the corolla, and by the peculiar corona; it is most probably a congener of it. _______________________________________________ I have three Gonolobus a brown (Missouri & Arkansas) a yellowish (Arkansas) and a green (Ark. Louisiana Texas) The first ones are hardly to be distinguished (I have not got the first); the green one I take to be G. laevis Mx, but believe that G. viridiflorus Nutt is the same; glabrous greenish flowers, ribbed follicles, a small indistinctly 5-lobed corona, and 5 fleshy projections of the centre of the anthers, under the very narrow membranaceous cusps or rather margins. What is G. suberosus R Br? — I do not like Decaisne entirely; why Acerates so far from Asclepias? Why Amaranthus paniculatus (I take it to be a plant which I have from Missouri, Arkansas & Texas with open not reflex and corolla and open, not erect, very curious corona) drawn to Acerates; why cuculli and not a few have them longer than the gynostegium. Why this arrangement with Gonolobus, mentioned above.

St Louis Febr. 20th 1845 My dear Doctor

Two or three days ago I received your letter of Febr 3d and the next day the very interesting pamphlets. What an eternal pity that government will not expend a few thousand dollars more in these expeditions and employ also a botanist, geologist etc. — You will now have my first description letter, and have the second; the others will follow as soon as possible. The Cactus' are ready packed for you; but I am yet affraid to send them on account of your cold winter; — here the hazel begin to bloom; the weather is delightful. —— I suppose you will find no difficulty in adhering the referring the plants sent you to the numbers in this and the last letter, some alteration became necessary; a few I will have to send you, so vesicaria; Helianthus maximiliani sent you may be the H. grosse serratus β. and the large leaf with it undoubtedly belongs to this plant; both were mixed up and I did not observe it before laying aside your

Single 25 [postmark] St. LOUIS FEB 22 Mo.

Prof. Asa Gray Cambridge Mass

[Asa Gray's note:} Greene ?

part. What do you say to the Gonolobus and my description of it? I do not like it entirely but can not describe the singular thing better. — But above all I should like to hear you about the Cactus species. Tell me whether my Mamill. {Maxillaria} similis & sulcata and Opunt. {Opuntia} frutescens are new or are really the same as Nuttall's plants. I have requested Wiley & Putnam to send my De Candolle vol. IX as soon as published. — I should like to retain Lindh. Collection till we have more, but some subscribers become impatient, and what is still more important, Lindheimer must have more money, though he wants very little; and I have can not pay him any longer for his plants, as I have done here to fore before, if I do not get any returns from the subscribers. I shall therefore distribute the plants as soon as I am through with the examination. — — Can you procure for me Prof. {Jared P.} Kirtland's different papers on western fishes in the Boston Journal? or can they be procured in any way? and can the whole journal not be got for our (Institution here, Western Academy of Nat. Sci. {Natural Sciences}), perhaps for an exchange of objects of nat. history, if not as a present? — The fish paper I should like much to get, as I take a great interest in Ichthyology. — I shall write Lindh. about mosses for Sullivant, he says, however, there are few in Texas! — Very truly yours G. Engelmann

If the Institution will pay Lindheimer any thing for the seeds etc it will be all right, but I dont want you to do it your self; they give you trouble and expenses enough without that.

1. Lindheimer, Collect 1844 - contin. 274. Lisianthus russellianus Wet prairies with clayey soil, west of the Brazos, July & August 275. Phlox drummondii Sandy soil, principally near watercourses, west of the Brazos. Among Lindheimer's plants I find a single specimen of another annual Phlox, collected on hard prairie soil: leaves oblanceolate linear, smooth, ciliate at base; stem nearly smooth, panicle pubescent; lobes of calyx setaceous & aristate, nearly twice as long as the calyx tube; corolla pubescent externally with acute or rather mucronate lobes; half as large at the corolla in Ph. drum. and much paler — perhpas only a smooth dwarf variety? 276. Convolvulus pickeringii Torr. Dry sandy prairies west of the Brazos; fl. from May to July. [identical with a specimen under that name received from Mr Curtis] Many prostrate stems from a very long and thick ligneous root.

A few specimens of the following apparently new Convolvulus were also sent. I have laid aside one for you and seeds; if you approve of it, it may be inserted in a note.

Convolvulus lobatus n.sp. radice perenni, caulibus pluribus prostratis, pubescentibus, foliis vastato-lobatis adpresse pubescentibus incanis; lobo medio elongato sinuatodentato; floribus singulis, pedunculis medio bibractoteolatis, petiolo longioribus; sepalis ovatis, obtusis pubescentibus, margine dense ciliatis, corolla infundibuli formi (alba) glabra extus ad nervos pilosa, sligmatibus cylindricis, capsula glabra; seminibus nigris rugosis glabris.

On Sandstone rocks near Industry, west of the Brazos; fl from May to June. Stems prostrate 3 or 4 feet long, flowers with rather small, about 6 or 7 lines long, and as wide. 277. Cuscuta cuspidata n.sp. β. Bottom lands of the Colorado river; August. — For the description see No 125. 278. Lithospermum mandanense Spreng Clayey prairies near Industry, April & May. — One or several erect stems from a black or rather dark purple thick fusiform root, simple below, branching above; whole plant strigosely pubescent canescent, leaves above rather scabrous; lowest leaves oblanceolate or even obovate, obtuse, upper ones linear-lanceolate and linear, acutish; flowers in a very loose leafy cyme; calyx longer than the tubular corolla, lobes of corolla roundish, crenulate hairy outside, erect (always ?); nuts white shining acutish, with a sharp ridge on the inner side and impressed dots on the inner face. — We can not distinguish this plant from specimens collected on the upper Missouri; both are not "decumbent". — We have received a few specimens of a similar plant, collected in prairies near Houston, which has a much more branched stem and smaller obtuse nuts, with only two rows of impressed dots along the carina; flowers not seen. Probably a variety of our plant. 279. Phacelia erectiflora n.sp. piloso-ubescens, racice annuua caulem singulum erectum s. plures ascendentes simplices emittente; foliis inferioribus petiolatis, obovatis, primordialibus integris; caeteris inciso dentatis, superioribus sessilibus laciniatopinnatifidis; racemis terminalibus simplicibus, peduncuicellis fructiferis erectis calycem aequantibus; calycibus piloso-canescentibus, laciniis erectis, oblongolinearibus, obtusisculis, corolla extus pilosa margine denticulato-erosa, capsula 12-sperma.

In sandy soil on the banks of the Brazos near Industry San Felipe; March. — This with the following species belongs to a subgenus of Phacelia, of which I can find no mention; it may be called Pleiospermon as it is distinguished form Phacelia proper by having 12 ovules in the 2-celled ovary, and usually 12 angular scrobiculate seeds in the hairy capsule; tube of the corolla also with 5 pairs of winglike scales with from 5 (nectariferous?) grooves corresponding with the lobes of the corolla, scales often unequal size in the same flower; filaments hairy below the middle

2. — Ph. {Phacelia} erectiflora is a grayish looking very hairy plant; stems in smaller specimens simple, in larger ones several, dividing at base, but not branching, from 4 to 7 inches high; pedicels as well as calyx segments erect, giving the specimens a stiff and compact appearance; corolla apparently pale blue 8 to 12 lines in diameter. 280. Phacelia patuliflora n.sp. puberula, radice annua caules plures prostratos s. adscendentes subramosos emittente; foliis obovatis, obtusis, omnibus basi attenuatis inciso-dentatis, inferioribus petiolatis, superioribus sessilibus; racemis terminalibus simplicibus; pedicellis frutiferis patulis s. sub recurvis, calyce multo longioribus; calycibus pilosis, laciniis patulis ovato-oblongis, obtusis; corolla extus pilosiuscula margine denticulato erosa, capsula 12-sperma.

In woods near San Felipe, March and April. A larger plant than the foregoing stems from 6 to 12 inches long, mostly prostrate; whole plant more green, with fewer and shorter hairs; leaves less deeply incised; with the teeth always ovate obtuse; racemes lax with much longer pedicells; corolla smaller, about 6 lines in diameter, deep blue, yellow at base. 281. Solanum mammosum Lin? foliis basi inaequali truncatis s. subcordatis, angulato-5-7-lobis, lobis repando-dentatis utrinque stellato-tomentosis, ad nervos supra subtusque aculeatis; pedunculis lateralibus, cymosis, pedicellis fructiferis refractis; calycibus armatis s. inermibus, truncatis, laciniis subulatis [drawing] corolla extus stellato-tomentosa.

Roadsides in prairies between the Brazos & Colorado; June. — A stout branching perennial(?) plant; distinguished from S. carolinense by the much denser whitish covering, by the cymose inflorescence, the larger bluish flowers and the truncate calyx tube with abruptly subulate teeth. Fruit not seen. — We have a specimen of a similar plant from the same region, with larger flowers and triangular acute lobes of the leaves; probably a variety of our species. 282. Pentstemon flammeus n sp. Glaberrimus, glaucus, foliis infirmis spathulatis, in petiolum attenuatis, superioribus ovatis, basi lata pedicellis in axillis summis bracterisque perfoliatis; racemo laxo, pedicellis in axillis bractearum singulis bibracteolatis, simplicibus s. bifloris, pedicello altero breviore; corolla tubulosa, cum staminibus et filamento sterili incluso glaberrima, seminibus angulatis.

Dry sandy soil in open woods west of the Brazos, May & June. — A remarkable plant on account of its splendid reddish yellow flowers with scarlet borders, which form a pleasing contrast with the bluish glaucous leaves. It is also the only Pentstemon known to us with a smooth fifth filament. — Stems 18 to 24 inches high, lower leaves 2 to 3 inches long, 1 inch or more wide, upwards gradually smaller; racemes lax, few flowered , 8 to 10 inches long lower and upper pedicells in the raceme one flowered, middle ones with 2 flowers; the lateral flower on a shorter pedicel; pedicels erect, flowers longitudinal; corolla 14 to 16 lines long, limb 7 to 8 lines wide. 283. Gratiola sphaerocarpa Ell On ponds and rivulets, Febrary to April, but also through the whole summer. The specimens collected later in the season are smaller, more erect, with narrower leaves. 284. Castilleja indivisa n.sp. biennis, caule erecto, ramoso, piloso; foliis lanceolato -linearibus, integris (rarissime trifidis) nervosis, e basi lata, semiamplexicauli-

3) angustatis, piloso-pubescentibus; racemodemum elongata; bractus indivisis, inferioribus e basi laate ovata, semiamplexicauli angustatis, herbaceis, superioribus versus apicem dilatatis, obtusis, coloratis; floribus arcte sessilibus; calycis bifidi lacniis retusis corrolam dorso glanduloso-pubescentum vix aequantibus; stigmate capitato, subbilobo, styli diametrum ter quaterve excedente.

Prairies from Houston to the Colorado, fl. from the end of March to June. very near the northern Castilleja (Euchroma Nutt) coccinea, with which it agrees in general habit, though it is much more leafy especially towards the base of the stem; distinguished from it by the usually entire leaves and bracts, which are half clasping with a broad base, not sessile with a narrowed one; by the closely sessile, not shortly pedicelled flowers, and the thick stigma, which is about twice as large as in the northern plant. We have not seen this one from Texas. 285. Hedeoma citriodora n.sp. suffructicosa, ramosissima, pilis crispulis puberula, foliis breviter petiolatis, oblongo-linearibus, integris s. versus apicem denticulatis; cymulis in axillis foliorum 1 to 3 floris; floribus pedicellatis; calyce tuberoso, incurvo, bilabiato, pilis clauso, labii superioris dentibus 3 lanceolatis, inferioris 2 subulatis, longioribus; corollae tubo longe ex serto, limbi labio superiore emarginato, inferiore majore 3-lobo, lobo medio, dilatato obcoradato; rudimentis filamentorum superiorum brevibus; acheniis oblongis.

On Sandstone rocks, near Industry, July. — The whole plant has a strong taste and smell of lemon peel. — Stems from a stout ligneous rhizoma numerous 8 to 12 inches high, somewhat shrubby, much branching; leaves small 4 to 6 lines long, 1 line wide, pubescent or a little scabrous, veined and dotted; calyx near 3 lines long unequal, corolla long exserted, about 6 lines long. 286. Stachyastrum scutellarioides n.sp. Stachyastrum n.gen calyx tubuloso-campanulatus, sub-septem nervis, reticulatis, bilabiatus, labio superiore lato, breviter trilobo, demum apice recurvo; inferiore angustiore bifido, demum incurvo; corolla tubo longe exserto, intus nudo, in facuem dilatato, limbi bilabiati labio superiore breviore plano integro erecto, inferioris patentis trilobi lobo medio emarginato stamina 4, inferiora longiora, filamenta superiora ad median corollam ad nata, omnia medio pilosa; anthene approximatae loculis divaricatis didymae, ad rimam loculorum breviter ciliatae; stylus glaber, apice bifidus, lobis aeaqualibus; achenia subglobosa sicca, laevia.

Herba annua texana, stachydis habitu unde nomen, foliis sessilibus argute serratis, glabris; floribus oppositis in spicam laxam puberulam dispositis.

St. scutellarioides n.sp. In heavy black soil on the prairies near Cat spring, west of the Brazos. fl — April & May. — Annual, stem about 1 foot high, erect, acutely 4-angular, branching above, glabrous; lowest leaves ovate obtuse, attenuate into a petiole, slightly serrate; upper ones ovate — lanceolate, half clasping, below with a narrow, the upper one with a broad base, acute, acutely and unequally serrate, two inches and more long, about 6 lines wide, smooth; inflorescence pubescent; bracts ovate, acuminate, small; flowers opposite, on short pedicells, forming a loose spike, calyx about 1 1/2 lines long reticulated and about 7 nerved (with 5 medial and on the upper lip two intermediate ones) 2-lipped, upper lip with 3 short roundish cuspidate, lower lip with 2 lanceolate acute lobes; after