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TAB. II.

Fig. 25. BRIZA.—a. Spikelet. b. Floret.

Fig. 26. DACTYLIS.-a. Spikelet. b. Floret.

Fig. 27. CYNOSURUS.-a. Spikelet, with the pectinated invo

lucre. b. Floret.

Fig. 28. FESTUCA.-a. Spikelet. b. Floret.
Fig. 29. BROMUS.-a. Spikelet. b. Floret.
Fig. 30. AVENA.-a. Spikelet. b. Floret.
Fig. 31. ARUNDO.-a. Spikelet. b. Floret.
Fig. 32. ELYMUS-a. Spikelet. b. Floret.

Fig. 33. HORdeum. -a. Three calyces, lateral, each with a single floret. b. One of the lateral florets. c. Central (perfect) one.

Fig. 34. TRITICUM.-a. Two Spikelets. b. Floret.

Fig. 35. BRACHYPODIUM.— —a. Spikelet. b. Floret.

Fig. 36. LOLIUM.-a. Spikelet with the single-valved calyx.

b. Floret.

Fig. 37. ROTTBOLLIA. -a. Spikelet on the rachis, with the late

ral valves. b. Floret.

Fig. 38. KNAPPIA.-a. Flower. b. Corolla.

Fig. 39. SPARTINA.-a. Flower. b. Corolla. c. Pistil. Fig 40. CYNODON.-a. Portion of a spike.b. Flower. Fig. 41. DIGITARIA.-a. Calyx. b. Corolla. Fig. 42. Pistil of a grass with its hypogynous scales. b. Portion of the stem of a grass with the ligule upon the leaf, and the sheath slit on one side. c-g. Examples of the inflorescence of Grasses. c. Spiked panicle as in Anthoxanthum. d. Panicle as in Briza minor. e. Compound spike, the spikelets distichous, as in Lolium perenne. f. Compound spike, the spikelets imbricated on all sides, as in Triticum cristatum. g. Spike unilateral, or with the flowers pointing one way, as in Spartina stricta.

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TAB. III.

Fig. 1. a. Fruit of HYDROCOTYLE.-b. Transverse section of the

same.

Fig. 2. SANICULA.-a. Sterile flower. b. Fruit.

Fig. 3. ERYNGIUM.- -a. Petal. b. Flower with a 3-cleft scale at its base. c. Fruit.

Fig. 4. CONIUM.-a. Petal. b. Fruit. c. Transverse section of do.
Fig. 5. a. Fruit of PHYSOSPERMUM.-b. Transverse sect.
SMYRNIUM.-6. Transverse sect.
CICUTA. b. Transverse sect.

Fig. 6. a.
Fig. 7. a.

Fig. 8. APIUM.-a. Petal. b. Fruit. c. Transverse sect.
Fig. 9. a. Fruit of PETROSELINUM.-b. Transverse sect.
Fig. 10. TRINIA.-a. Sterile fl. b. Fruit. c. Transverse sect.
Fig. 12. a. Fruit of SISON.-b. Transverse sect.

[blocks in formation]

Fig. 16. a.

EGOPODIUM.-b. Transverse sect.
CARUM.-b. Transverse sect.

BUNIUM.-b. Transverse sect.

PIMPINELLA.-b. Transverse sect.

Fig. 17. SIUM.-a. Petal. b. Fruit. c. Transverse section of a single carpel.

Fig. 18. a. Fruit of BUPLEURUM.-b. Transverse sect.

Fig. 19. a.

ENANTHE.-b. Transverse sect.

Fig. 20. ÆTHUSA.- -a. Petal. b. Fruit. c. Transverse sect.

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