TRIANDRIA.— DIGYNIA. 69 



HAB. Dry woods. July — Sept. U. Culm erect ,B— 18 



in. high ; joints hairy ; leav. spreading ; fl. minute. 



si. curvatum : culm very tall, rather rigid ; branches 



few and a little curved. 

 3. fasciculatum : culm low, erect or decumbent ; 

 branches and leaves densely fasciculate ; panicle* 

 very small, concealed among the leaves. 

 y. gracile : culm tall, slender ; leaves membrana- 

 ceous. 

 HAB. ». In moist meadows. /3. In sandy fields, y. 

 In swamps. 

 13. P. nitidum : culm slender, simple, erect, smooth ; 

 sheaths bearded at the throat ; leaves very few, 

 broad-linear; panicle capillary, rather crowded, com- 

 pound, remote, smooth ; spikelets minute, obtuse, 

 ovate, slightly pubescent ; inferior glume very small. 

 HAB. Meadows and woods. June— July. U . Culm 

 18 in. — 2 ft. high, mostly simple ; nodes annulate ; 

 leav. a little shilling. 

 st. ciliatum : culm hairy ; leaves linear-lanceolate, 

 (the lowest ones broader,) sparingly hirsute, ciliate 

 on the margin ; panicle with the branches and flow- 

 ers pubescent. 



|3. ramulosum: culm more branched; panicle con- 

 tracted; branches smooth, 

 y. gracile : culm very slender, smooth ; leaves very 

 narrow, and with the sheaths smooth ; panicle 

 nearly simple, few-flowered, smooth ; superior 

 valve of the abortive floret minute, entire. ? 

 fc pilosum : culm simple, very hairy ; lower leaver 

 approximate, and broad, lanceolate ; upper one? 

 linear, rather rigid, somewhat hairy on the upper 

 surface, ciliate at the base ; sheaths villose and mi- 

 nutely papillose ; panicle sub-contracted ; branches 

 virgate, and with the flowers, pubescent. 

 l, glabrum : smooth on every part, except the base 

 of the leaves, nearly simple ; lower leaves short, 

 approximate, sub-cartilaginous ; panicle branched, 

 almost verticillate ; spikelets large ; superior valve 

 of the abortive floret entire. 

 f. barbatum : culm simple, smooth ; nodes hairy ; 

 leaves linear-lanceolate ; sheaths smooth, except 

 on the margin ; flowers minutely pubescent. 



