GRAMINE^. 663 



A. SCabra, Kunth. Culm scarcely any, the long (1^-3°) peduncle 

 arising from a creeping rootstock ; leaves radical, setaceously attenuate ; 

 panicle large, patulous, the branches 2-5 in a cluster ; spikelets appressed; 

 glumes awn-pointed, the lower one longer ; awns straight, the lateral ones 

 very short ; stamens 2. — Sandy coast, Florida. 



CYNODON", Ricliard. 



C. Dactylon, Pers., var. maritimus, Nees. Culms stouter (6' high) ; 

 leaves shorter and broader, distichous, the sheaths imbricated ; spikes 6-8. 



— Sandy coast, South Florida. — Leaves 1' long. 



BOUTELOTJA, Lag. 



Spikelets crowded in two rows on one side of the flattened rachis, 1-3- 

 flowered, the lower flower perfect, the upper ones sterile or rudimentary. 

 Glumes keeled, the lower one shorter. Lower palea 3-nerved and 3-toothed ; 

 the upper one 2-nerved, 2-toothed. Stamens 3. Sterile flower awned. 



B. gracilis, H.B.K. ? Annual ; culms filiform ; leaves narrow-linear, flat, 

 papillose-ciliate ; spikes 1 or 2, purplish, many-flowered, the smooth rachis 

 awn-pointed ; keel of the upper glume papillose-bristly ; teeth of the smooth- 

 ish lower palea setaceous ; awns of the sterile flower as long as tlie spikelet. 



— Dry pine woods. South Florida {Garber). 



B. eurtipendula, Gray. Perennial ; culms simple (l°-2° high) ; spikes 

 several, distant, spreading or reflexed, 4-12-flowered ; flowers scabrous; 

 teeth of the lower palea subulate ; awns of the sterile flowers shorter than 

 tiie spikelet. — Banks of the Flint River, Georgia [Feay). — A small form 

 with 4-flowered spikelets. 



TRIPLASIS, Beauv. 



T. sparsiflora, Chapm. Anntial; culms rigid (6'- 12' high); leaves 

 short, linear-subulate ; racemes axillary and terminal, simple, appressed, 

 few-flowered; spikelets 2 -4-flowered, tiie flowers distant; glumes nearly 

 equal, the lower one 2-toothed, the upper acute ; lower palea oblong, 3- 

 nerved, ciliate, 2-toothed, twice the length of its awn, the upper one villous 

 above the middle. — Sandy coast at Punta Rassa, South Florida. 



POA, L. 



P. brevifolia, Muhl. Cuhns erect (2° high) ; leaves broadly linear, 

 abruptly acute, tliose of the culm few and short; branches of the panicle 

 few, mostly by pairs, bearing the 3-flowered spikelets near the end ; lower 

 palea obtuse, faintly nerved, sliglitly hairy on the back. — Rich soil, Florida, 

 and northward. April. 



P. sylvestris, Gray. Culms compressed (2° high) ; leaves thin ; panicle 

 long-peduncled, ovate, the branches 5-6 in a cluster, roughish ; spikelets 

 ovate, loosely' .3-flowered, the lower palea villous on the margins and keel. — 

 Mountains of Georgia and Tennessee. June. 



