pam'cum, •triandria dtgynia. ^09 



Culms creeping, as in the two last described species, but rather more 

 robust. — Leaves broad, and somewhat cordate at the base, waved ; 

 maro^ins of the sheaths ciliate. — Panicle, the h>wer part always 

 confined within the sheaths of the extreme leaf, oval, from three 

 to five inches long, composed of numerous very fine capillary ra- 

 mifications, the common rachis and larger branches very woolly. 

 —Floz&ers obliquely-oval, numerous, on very fine, long pedicels. 

 — Calyx, i\\e exterior valve lanceolate, the second boat-shiiped, with 

 the outside covered with very long soft wool, the thud oval. — Ca- 

 rol, with a neuter valve, but no stamen. — Seedo\z\, smoolh, uhile. 



41. P. tcnellum. R. 



Culms ascending. Leaves long. Panicles oblong, very ramous. 

 Flowers solitary, remote ; second valvelets of the calyces recurved, 

 and pointed. Carol, three-valved. Seed oval, smooth, five-nerved. 



Grows on pasture ground, bordeis of cidtivated lands, &c- 



Culms many, branchy, near the ground prostrate, rooting at the 

 joints, the rest ascending; from one to two feet high, and as thick 

 as a sp;irro\\'s quill. — Leaves soft with white hairs. — Panicles ohlong, 

 generally as long as the rest of the plant, thin, composed of expand- 

 ing, ca))illary, ramous branches. — Flozaers remote, oval, small — Ca- 

 lyx, the glumes striated, otherwise smooth. — Corul, with a third 

 neuter valve. — Seed oblong, smooth, light-brown, five-streaked. 



42. P. serrufatum. R. 



Culms erect, from two to four feet high. Leaves sword- shaped, 

 with serrulate margins. Panicle, spiked valvelets of the calyces 

 sharp-pointed; Seed smooth, oblong. 



A large erect, coarse species ; a native of moist valleys. 



Culms erect, ramous, from two to four feet high. Leaves some- 

 what cordate at the base, from thence tapering to a point, margins 

 ciliate ; sheaths as long, or longer than the joints, smooth. — PanU 

 cle erect, linear, composed of erect, linear, ramous ramifications, 

 which stand somewhat remote, particularly below, so that the pa- 



