72 



TKIANDRIA DIGYNIA. 



82. ARISTIDA. Gen.pl. 125. 



dickotoma. i.A. cespitosa, culmis dichotomis, floribns subspicatis, 



subuniaristatis : arista contorta gluma breviore : late- 

 ralibus brevissimis. Mtch.Ji. avier. 1. p. 41. 



On dry gravelly soil : New England to Carolina, com- 

 mon. (5*. May — July. v. v. Resembles iVa7Y/«5 5/ric^a. 

 stricta. 2. A. culmis foliisque stricte erectis, racemo longo spicafo 



coarctato : aristis gluma longioribus, foliif convoluto- 

 filitormibus, glabris, A'lich.Jl. amer. 1, p. 41. 



In shady rocky situations, on river sides : Virginia, Ca- 

 rolir,a, &c, 1/ . June, July, v v. 

 olisantha. 3. A. culmo stricto subramoso, foliis convoluto-filiformi- 



bus, floribns dislanlibus solitariis, arislis longis diva- 

 ricatis. Mkh.fl. amer. I. p. 41. 



A. adscensionis. JValt.fl. car. 74, 



On the banks of rivers, in rocky places : Illinois, Vir- 

 ginia, &c. 11 . June, July. v. v. 



83. STIPA, Gen.pl. 



juncea. i. S. foliis convoluto-filiformibus, panicula laxa, calycibus 



subaristatis semine longioribus, aristis longis vix pa- 

 bescentibus. 



S. juncea. IFilld. sp. pi. 1 . p. 440. 



Icon. Desf. utl.\. t. 28. 



On the banks of the Missouri. M. Lewis. 1/ . Aug. 

 V. s. in Herb. Lewis. By a careful comparison of this 

 plant and one from the north-west coast of America, 

 collected by Mr. Menzies, in possession of A. B. Lam- 

 bert, Esq. and a specimen from the south of Europe 

 in the same collection, I could hnd no other distinc- 

 tion from S. juncea than the seeds being more pubes- 

 cent, and the arista not so much as figured in Desfon- 

 taines' Elora. 



canadensis. 2. S. foliis setaceis, panicula parva, calycibus glabris ob- 

 tuse-ovatis semine pubente oeqnantibus, aristis crassis 

 brevibus. Lam. eiicycl. J. p. 452. 

 A. juncea. Mich.Jl. amer. 1 . p. 54. 

 In rocky places : Canada, Hudson's Bay, &c. -|-. 

 avenacea. 3. S. foliis striatis glabris, panicula patente subunilaterali : 



ramis verticillatis ramulosis, calycibus acutis membra- 

 naceis semine glabro aequantibus, aristis n'udis, tor- 

 iuosis. —JVilld. sp, pi. 1 . p. 442. 



