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[1358/602].

Explanation of the Plates. I.A. Lapham Del. C.A. Bauer, St. Louis Mo.

Plate I.

Fig. 1. Leersia Virginica, Willd. a. Branch of the panicle. b. Spikelet. c. Spikelet, opened. d. Stamens and pistil. e. Part of the stigma, highly magnified. f. Seed. g. Surface of the upper palea highly magnified.

Fig. 2. Zizania aquatica, Linn. (Wild rice). a. The fertile flower. b. The staminate flower. c. Pistil. d. Scales. e. Part of the awn magnified. f. Seed (natural size). g. Part of the stigma and a grain of pollen, highly magnified.

Fig. 3. Alopecurus aristulatus, Michx. a. The spiked panicle or head. b. Spikelet. c. Stamen, after it has opened and discharged the pollen. d. Lower palea and awn. e. Pistil.

Fig. 4. Phleum pratense, Linn. (Timothy). a. Spikelet. b. Lower palea. c. Stamen. d. Cross section of a portion of the tuber, showing the hexagonal cells and a bundle of woody fibers. e. Longitudinal section of the same. f. One of the woody fibers, more highly magnified to show the markings, supposed to be openings of the inner lining of the cell.

Fig. 5. Vilfa vaginiflora, Trinius. a. Branch of the panicle. b. Spikelet. c. Paleae.

Fig. 6. Sporobolus heterolepis, Gray. a. Branch of the panicle. b. Spikelet. c. Stamens and pistil.

Fig. 7. Agrostes scabra, Willd. a. Branch of the panicle. b. Spikelet. c. Paleae. d. Pistil and one of the stamens. e. Scale.

Fig. 8. Cinna arundinanceae, Linn. a. Branch of the panicle. b. Spikelet, opened. c. Pistil.

Fig. 9. Muhlenbergia Willdenovii, Trin. (Nimble Will). a. Branch of the panicle. b. Spikelet. c. Palea. d. Pistil. e. Scale. f. The running root stalk.

Fig. 10. Brachyelytrum aristatum, Beauv. a. Part of the panicle. b. Spikelet. c. Back of lower palea. d. Upper palea. e. Seed. f. Stamens and pistil.

Fig. 11. Calamagrostis Canadensis, Beauv., (Blue Joint). a, Part of the panicle. b. Spikelet, opened. c. Glumes. d. Palea and hairs.

Right Page: Plate I. Oryzoideae. Phleoideae. Agrostoideae. [1359/603].

1a.
1b.
1c.
1d.
1e.
1f.
1g.

2a.
2b.
2c.
2d.
2e.
2f.
2g.

3a.
3b.
3c.
3d.
3e.

4a.
4b.
4c.
4d.
4e.
4f.

5a.
5b.
5c.

6a.
6b.
6c.

7a.
7b.
7c.
7d.
7e.

8a.
8b.
8c.

9a.
9b.
9c.
9d.
9e.
9f.

10a.
10b.
10c.
10d.
10e.
10f.

11a.
11b.
11c.
11d.