PLend.ph. 10. GRAMlNExE. 72. Trisetum. 121) 



Trisetum Jiavesceiis. Yellow threehristle. 



Panicle equally spreading, diffused, becoming contracted; 

 locusta 2 to 5-flowered, shining, yellowish ; lower leaves 

 pubescent ; ligula scarcely visible ; outer spathellules 5-rib- 

 bed; root rather creeping. 



Giamen aveiiaceum pratense elatius, panicula flavescente, locustis 

 parvis, Rati Syn. 407, 5. 



Aveiia flavescens, Lin. S. P. 97. 

 Trisetum pratense, Persoon Syn, 1, 97. 



Fields and pastures; perennial; June and July. 



Culm upright, 2 feet high ; leaves flat, acute ; sheaths 

 pubescent ; panicle rather drooping, manyflowered ; pedun- 

 cles seniiverticillate ; locustce spreading ; Jloivrets longer 

 than the glume. 



&. hiflorum. Locustce 2-flowered.~ 



XXX I r. 73. DANTHONIA. R. Brown. Haver. 



Glumes 2 to 5-flowered ; spathelles alternate, nearly equal, 

 longer than the flowrets; lower spathellule 2-toothed, awned 

 between the teeth; awn plaited, twisted, tapewormshape; 

 upper blunt, truncated, not nicked ; lodicule ovate, not 

 notched, bald; stigmata aspergilliform ; eariop^ii free, ob- 

 tuse, scarcely furrowed. — Panicle not branched, facing one 

 way. 



Danthonia strigosa. Rough haver. 



Panicle oblong, slender, loose; locustCB 2-flowered; lower 

 spathellule streaked at the tip ; leaves smooth. 



Avena strigosa, Schreber Lips. 52. 

 Danthonia strigosa, Pal. de Beauvois, 92. 



Corn fields ; annual ; July. 



Root fibrous ; culm 3 feet high, smooth ; leaves flat, glau-i 

 cous ; ligula blunt ; panicle upright, the tip drooping. 



XXXIII. 7't. AVENA. Pliny. Oat. 



Glume membranaceous ; spathelles alternate, nearly equal, 

 longer than the flowrets ; glumelles awned ; loiver spathel- 

 lule 2-lobed or 2-cut, toothed, awned on the back ; awn 

 leathery, plaited, twisted ; upper spathellule 2-cut, toothed, 

 sometimes torn ; lodicule ovate, not notched, bald ; stigmata 

 villose; cariopsls husked, furrowed. — Panicle brajiched, 

 loose. 



VOL. II. K 



