90 TRIANDRIA, DIGYNIA. AGROJiTiSo 



mate ; stigmas plumose. Seed ovale, semitransparent, striate, 

 acuminate, with an oblong scar or adnate scale on one side of 

 the base. 

 Hab. In sandy barren soils; New-York, New- Jersey, &c. Sep= 

 tember — October. Also a native of South-America, {^Hum- 

 boldt,) and of New-Holland, {R. Brown.) 



Pursh and Per so on have confounded this grass with 

 the .\. fiungens of ^c/ireber, a species to which it bears 

 scarcely any resemblance. 



12. A. lon^ifolia*: panicle contracted, spiked, generally 

 concealed ; corolla much longer than the calyx, subequal, 

 smooth and spotless, without awns; leaves very long, fililbrin 

 and recurved at the apexo A. involuta M u h l. Gram. p. 72. 

 A. aspera M i c h. FL I. p. 52 ? 



Root perennial, consisting of large pubescent fibres. Culm erectj, 

 2 — 4 feet high, simple, terete. Leaves sometimes more than 

 2 feel ill length, gradually attenuated into a thread-like extre- 

 mity, involute, a little scabrous. Sheaths smooth, closed. Sti- 

 pule bearded. Panicle terminal and lateral ; often partly ex- 

 serted, but frequeatly entirely concealed and swelluig out the 

 sheaths; j^owfr* much compressed. Glumes of the calyx- 

 ovate-lanceolate, while, (in the exposed part of the panicle 

 purple,) membranaceous, nerveless, rough on the keel ; the 

 superior half as long again as the inferior glume. Corolla a 

 little unequal, as long agnin as the inferior glume of the calyx ; 

 valves very smooth, oblong-lanceolate, rather obtuse, without 

 nerves; the inferior a little longer, only slightly embracing the 

 superior; keel a little scabrous. Stamens 3 ; jilaments shorter 

 than the germen ; anthers small, oblong. Styles 2, very sl.ortj 

 arising from eac!i aide of the beak of the seed; stigjnaa de- 

 compound, while or purple. Seed oval, brown, with an oblong 

 adnate scale on one side of the base. 



Hab. On sandy hills, and in fields; near Kingsbridge, New- 

 York. Plentifully near Hob'/ken, New-Jersey. Dcerfield, 

 Massaclmsetts. Coo ley and Hi t c h c o c k. In Pennsylva- 

 nia. Muhlenberg. September — October. 



In this species Mm A/en6er^ observed no stamens ; yet, 

 thoUf;;h minute, tney occurred in all the specimens which I 

 examined. He also observes, that there appears to be but one 

 style ; but v/hat he supposed to be the style, appears to me to 

 be only ihe acumination of the seed. 



13. A. clandcsfina Spren^.: panicle spiked, partly 

 concealed ; corolla unequal, much longer than the calyx, hairy 

 and spotted, slightly awned ; leavesvery long. Spreng. 

 Ctnt. 32. Muhl. Gram. p. 73. Elliott Sk. I. p. 138. 

 Roem. ^ Schult. II. p. 369. 



Root perennial. Culm about 2 feet high, erect, terete, smooth. 

 Leaves very long, rigid, scabrous on the margin, glaucous. 

 Stipule bearded. Panicle comracted, concealed, often sooty 



