SYNOPSIS OF GENERA. XIX 



Clusters small glabrous. Spikelets more or less stalked 

 and, as well as the clusters, enclosed within sheathing 

 bracts. 



Iseilema, p. 43. 

 Spikelets with one fertile floret and a male one below 

 it, sessile between two flattened pedicels each bearing 

 a rudimentary or barren spikelet, the whole embraced 

 by a sheathing bract, the bracts clustered on the branch- 

 es of a leafy panicle. Terminal glume of fertile floret 

 usually awned. (Vide Plate D., Fig. 20). 



Apluda, p. 44. 

 SERIES B. Poaeese, — Pedicel continuous below the glumes (ex- 

 cept in Crypsis and Alopecurus). Rachilla often jointed above the 

 persistent lower glumes, and sometimes produced beyond the fertile 

 florets in the form of a stipe. Male or rudimentary florets, when 

 present, above the fertile one. 



TEIBE VII. Phalarideee. — Each spikelet contains one termi- 

 nal hermaphrodite floret. Glumes 6 (or 5 and a pale) ; lowest 

 pair empty, usually persistent below the joint; second pair 

 (above the joint) usually empty and small, and often reduced 

 to a bristle; upper pair, enclosing the terminal fertile floret 

 and grain, without any continuation of the rachilla above it. 

 * Two empty glumes below the joint. 



Spikelets in a dense spike-like panicle or thyrsus. The 

 two inferior glumes largest, flat, and often with a winged 

 keel ; second pair narrow or reduced to bristles ; upper 

 pair thin and transparent. {Canary grass, &c.) 



Phalaris, p 45. 

 ## No glumes under the joint. 



Spikelets in a dense head surrounded by 2 — 3 sheath- 

 ing bracts. Eeceptacle broadly convex. Glumes 4, not 

 awned. Stamens 2. A small diffuse grass with short 

 stiff leaves. (Vide Plate D., Fig. 21). 



Crypsts, p. 45. 

 Spikelets in a dense cylindrical spike-like panicle ; recep- 

 tacle linear. Glumes 3 or 4, the outer ones larger, boat- 

 shaped and keeled on the back. Pale and lodicules 

 none. Stamens 3. (Vide Plate D., Fig. 22). 



Alopecurus, p. 46. 



