TRIANORIA. DIGYNIA, 81 



eluded by the calix. Masculine and neutral ca- 

 lix, uniform or regular. 



Flowers imbricated in an articulated, unilateral, com- 

 pressed rachis; the nri.tsculine and hermaplirodi e fiowers 

 intermixed. 



Species. 1. Jlf. grarndaris. (On the sea-coast of Caro- 

 Irfia and (leoi-tJ -a. Mich.) 



A g-eniis ot Lulia and America within the tropics, con- 

 sistmg- of 2 species. 



113. LEPTLRLS. R, Brown, (Rotbollia, spe- 

 cies, Willd.) 



Flowers polvj^amaus, spikesl. Rachis articu- 

 Jate'i, filif(>rii); articulations sini^i --flowt-red. — 

 Calix tixed, or grovviuiij to »lie ra< his, 1 or 2- 

 vaived, the valve simple, or biparted. 



With the precise characters of this genus, as described 

 by Mr. R. Biown, 1 am utiacq.iainted, but satisfitd with 

 the propriety of separating plants of such dissimilar ha- 

 bits, as have been liiiherto referred to Hjtbollia, 1 have 

 ventured to give it, however imperfectly. 



Species. 1. L. *paniculatus. liachis incurved, com- 

 pounded, acu ely triunj^uiar, brjiuches and summit flowe!'- 

 bcaiing: spikrs o i one side, subuiatt-, compressed, unila- 

 teral; cahx 2-vahvd, acuminate, l-flo\vered; fiowers all 

 liermaphrodie, 2-valved. 



Obs. Annu .1. Culm scarcely a foot high, roundish, 

 compressed, leaves siinrt, ri[;id, slieathing the base of 

 the panici' ; panicle or naked rachis, slender, rigid, angu- 

 lar, bearing 6 to IJ, comrji esstd, subulate, spikes on one 

 side, not soluble or iragile at ihe articilations, eacn 1 or 

 2 inches Img; Howers remote, on one side or the rachis. 

 Calix rigidly fixed, of 2 unequal parallel valves closing 

 the scrobiciilum; flower 2-valved, the exterior valve re- 

 * sembling the cahx, the interior membranaceous. 



On dry saline plains, near Fort Mandan, on the Mis- 

 souri. Flowc-ring m June. 



114. ^ANTIlOPOGON.f (Andropog)N amU- 

 gmim, Mi( ii.) 



FMowers p;)lycj;amous, irregularly alteniatijig 



\ Fnim ccv6o<;^ a Jlnver aud TTcoyejv, a bcaviL Tiie neutral 

 long awn. 



