Fimbristylis Spadicea Vahl, p. 171
[S1. Styles 2-cleft, achenium lenticular]
42 Fimbristylis Spadicea Vahl.
Syn. F. cylindracea Vahl. Scirpus spadicea Linn S. pubernulus Michx.
Leaves chiefly from the base rigid, channelled-convolute [ao] filiform, smooth; umbel of few rays simple or compound, the rays very unequal, erect-spreading; involucre of 2 or 3 awl-shaped leaces, mostly shorter than the umbel; spikes ovate oblong becoming cylindrical (dark chestnut colored); scales rigid, broadly ovate, obtuse, very closely imbricated; Stamen 3; style 2-cleft, the bulbous base; achenium [crossed out], minutely striate, and impressed=dotted, obovate, unequally biconvex. Culms 1 to 3 feet high, strong and rigid, naked above.
Salt marshes of the sea coast-Found also in Illinois and Michigan. Extends eastward to N. York, and south to Florida.
Fimbristylis Autumnalis Roemer & Schultes p. 172
[S2 Style 3-cleft, achenium triangular]
 48 Fimbristylis Autumnalis Roemer & Schultes.
Syn. Scirpus autumnalis Linn. [Trich] S. mucronatus Michx. F. Michauxi, Pers. Trichelostylis mucronatus Torr.
Leaves flat, very acute, smooth; umbel compound or decompound, spreading; involucre 2 or 3-leaved, shorter than the umbel; spikes oblong, acute, single or 2 or three together, mostly at the extremity of the rays; scales ovate-lanceolate mucronate, the points a little spreading; stamens 2 or 3; style 3-cleft separating with the bulbous base; achenium broadly obovate-triangular, smooth or minutely serracose, convex on the sides, the angles margined. Culms 4 to 12 inches high, flar, often diffusely spreading. Flowers in August.
Muddy ground, and bays. Illinois, Indiana, Ohio, and Michigan.
Plate I fig 16. a, Head of spikes; b, a spike; c, the scale; d achenium and pistil.
Extends east to Massaachusetts, and south to Florida.
Fimbristylis Capillaris Gray, p. 173
 44 Fimbristylis Capillaris Gray.
Syn. Scirpus capillaris Linn. S. Muhlenbergii, Spring. Isolepis capillaris Roem. & Schultes.
Leaves mostly radical, setaceous [bristle] serrulate-ciliate, much shorter than the culms; sheaths hairy at the throat; umbel compound or cymose-panicaled; involucre 2 or 3 leaved; spikes usually 4, ovoid-oblong, terminal, on short rays; scales oblong, obtuse, slightly pubescent; stamens 2; styles 3-cleft slender, the base bulbous; achenium triangular, very obtuse, minutely corrugated transversely, tipped with the minute, depressed bulb, which is more persistent than the rest of the style. Culm 3 to 8 inches high, capillary, densely tufted. Flowers in August.
Sandy fields.-Illinois, Ohio, and Michigan. Extends to the southern states.
Genus X Ceratoschoenus Nees, p. 174
Genus X Ceratoschoenus Nees
(Greek keros a horn, and schoenos a rush)
Spikes spindle shaped of one perfect and 1 to 4 staminate flowers; scales few, closely imbricated, the lower ones empty; perianth of 5 or 6 rigid or cartilaginous flattened bristles, sometimes dilated or united at the base; stamens 3; style simple, entirely hardening in fruit into a long and slender awl-shaped upwardly roughened beak with a narrow base much exserted and several times longer than the flat and smooth obovate achenium.- Culms triangular leafy.
Ceratoschoenus Corniculata Nees, p. 175
 45 Ceratoschoenus Corniculata Nees.
Syn. C. longirostris, Gray. Rhyncospora laxa Vahl. R. longirostris Ell. R. corniculata, Gray.
Cymes decompound, diffuse; bristles awl-shaped, stout, unequal, shorter than the achenium; glumes ovate, fuscous; spikes subulate, long-beaked by the persistent exserted styles. Culms 3 to 6 feet high. [triguetrous.] Flowers in August.
-Wet places. Ohio. Extends south to Florida.