600 FLORA OF TEXAS. 



G. RACEMOSUS, Beauv. Culms (1° high) rigid; leaves 

 lanceolate (H'-2' long); branches of Vie panicle bearing 

 the linear spikelets from the base to the summit; awn 2-3 

 times the length of the palese and the pedicel of the sterile 

 flower. (Andropogoii ambiguiis, Michx.) Var. filiformis 

 has narrower leaves, the spikelets borne above the middle 

 of the branches, and the axons and sterile pedicel shorter 

 than the paleae. Dry sandy soil. September and October. 



EUSTACHYS, Desv. 



Chiefly tropical grasses, with compressed culms and 

 sheaths, distichous flat or folded obtuse leaves, and digitate 

 rarely single spikes ; spikelets 2-3-flowered, imbricated or 

 crowded in 2 rows on one side of the triangular rachis; 

 the loivest floiver perfect and sessile, the iqyper ones stami- 

 nate or neutral, and stalked; glumes 2, membranaceous, 

 persistent, the upper (exterior) one short-awned; j!;«Zec5 

 coriaceous, the lower one boat-shaped, mucronate-awned 

 under the apex, the upper (mostly wanting in the sterile 

 flowers) unawned ; stamens 3 ; grain free. 



E. PETR^A, Desv. Culms (l°-2° high) clustered, erect; 

 leaves glaucous; spikes 3-5; spikelets 2-flowered; glumes 

 hispid, the upper oblong, deeply emarginate ; loiver palea 

 dark brown, hairy on the keel and margins, bearded at the 

 base; sterile floiver neutral, club-shaped, awnless. Damp 

 soil along the coast. May-August. Leaves 3'-5' long; 

 spikes erect ; spikelets roundish. Perennial. 

 # 

 Cf NODON, Richard. Bermuda Grass. 



Diffusely creeping grasses, with short and erect flowering 

 stems, and flat leaves; spikes digitate, 1-sided; spikelets 

 crowded, awnless, 2-flowered, the lotver floiver perfect, the 

 upper an awn-like pedicel; glumes 2, membranaceous, 

 nearly equal ; pale(3 2, membranaceous, the lower one larger 

 and keeled ; stameiis 3 ; grain free. 



