AGROSTis. TRIANDRTA. DIGYNIA. 87 



Hab. In swamps and wet shady places. New-Jersey and Penn- 

 sylvania. September. 



5. A. soholifera Muhl: culm erect, branched; panicle 

 contracted, filiform, simple ; branches appressed ; corolla 

 longer than the equal caljx, hairy at the base ; valves equal, 

 awnless, mucronate at the tip. Muhl. Gram. p. 70, 

 Willd. Enum. h. Berol. I. p. 95. R o t m. ^ S c hul t. 

 II. p. 364. Trichochloa so6o/(/*era Trin, 



Root perennial, creeping. Cu!m soboliferous and frequently de- 

 cumbent at the base, about 2 feet high ; branches erect and 

 filiform ; nodes not swelling. Leaves 4—6 inches long, about 

 2 lines wide, flat, pale-green, a little scabrous. Sheaths open, 

 smooth ; sti/iule obsolete. Panicles at the extremities of the 

 branches, resembling very slender spikes ; branches alternate 

 or in pairs ; flowers crowded. Calyx acute. Corolla nearly 

 half as long again as the calyx ; valves equal, scabrous on the 

 keel, and with conspicuous hairs at the base ; the interior valve 

 with a short point like the rudiment of an awn at the tip. Sta- 

 mens 3. Styles 2 ; stigmas purple. 



Hab. On rocky hills, and in woods. New-York and New-Jersey. 

 Plentiful on the hills near Hoboken. In Pennsylvania. Mu h- 

 lenberg. August — September. 



This species is not easily distinguished from K.laterifiora fi. 

 by the description, though specimens of each have but little 

 resemblance when compared. 



6. A. tenuijlora IVilld.: culm nearly simple, pubes- 

 cent about the joints ; branches (if any) appressed ; stipule 

 obsolete ; panicle contracted, filiform ; corolla longer than 

 the calyx; inferior'valve with an awn twice as long as the 

 flower. Willd. Spec. I. p. 94. Hort. Berol. t. 12. (bona.) 

 Pursh Fl. I. p. 63. Muhl. Gram. p. 63. Roem. (f- 

 Schult. II. p. 372. Trichochloa yongmfa Trin, 



Root creeping, perennial. Culm 3 feet or more in height, ge- 

 nerally simple, but sometimes a little branched, soboliferous at 

 the base ; nodes, and generally the sheaths, pubescent. Leaves 

 few, spreading nearly horizontal, strongly nerved, about 6 inches 

 long and 2-^ lines wide, covered with subdiaphanous dots. 

 Panicles filiform, a little sheathed at the base. Calyx- unequal : 

 glumes lanceolate, acuminate. Corolla a third or more longer 

 than the calyx ; inferior valve terminated by an awn 2 — 3 times 

 the length of the flower. Stamens 3. Styles 2. Seed oblong. 



Hab. In'stony woods, in rocky shady situations ; not uncommon. 

 July — August. 



7. A. syhatica*: culm erect, much branched, diffuse, 

 smooth ; stipule lacerate ; panicle fihform ; corolla longer than 

 the calyx ; awns three times as long as the flower. A. diffuses 

 Muhl. Gram, p. 64. nee Host. 



