fl4 TRIANDRIA. DIGYNIA. poav 



scabrous on the margin. Stamens 3. Seed oblong, red, very 

 small. 

 Hab. In sandy fields. Ncv-Jersey. Pennsylvania. Muhlen- 

 berg. Litchfield, Con:)ecucat. Brace. July — August. 



Very similar to the preceding species, but easily distin- 

 guished by its firmer culm and the villose axils of the panicle. 



B. .tpeclabij's^: spikelets linear, 10 — 15-flowered. P. 

 spertibilts P ur s h Fl. \. p. Bl. P. refracta M n h I. p. 146. 

 Elliott Sk. I. p. 62. P. amubilis Walt. Car. p. 80. 

 Meq x'iT ACHY A spertabil IS Roem. <^ Schult, II. p. 589. 



Culm li.r^er and fii-mer than in the preceding. Sfiikelets hand- 

 somely coloured with purple, sometimes half an inch long. 



Hab. In sandy fields along the sea-shore of Long-Island ; par- 

 ticularly aburnlaiit near Bath. Jutfust. In dry barren sand- 

 fields. New-York to Carolina. P ursh. 



This variety ceitainly does not differ from the P. hirsuta of 

 Mic liau x^ except in size, and in having more florets in each 

 spikclet. 



19. P. pectmacea M i c h. : culm cespKose, oblique ; leaves 

 hairy at Ihe base ; panicle capillary, expanding, pyramidal, 

 hairy in the axils ; spikelets linear, 5 — 9-flowered ; florets 

 free, acute ; superior valve of the corolla persistent. M i c h. 

 F/. I. p. 69. Pursh Fl. \. i^.B\, Roem. ^ Schult. 

 II. p. 562. P. pilosa Muhh Gram. p. 141. P. tenella 

 Pursh Fl. I. p. 80. Elliott S/c 1. p. 160. 



Root annual. Cucm from a span to a foot long, geniculate at the 

 base, sometimes decumbent. Leaves 2 — 4 inches long, flat, 

 smooth, except towards the base, 5 -nerved. Sheaths striate, 

 smooth, bearded at the threat. Panicle large, loose ; branches 

 a little flexuous, the lower ones subverticillate. Sfiikelets 2 — 5 

 lines long. Glumes very unequal, nerveless ; the inferior one 

 minute ; the other scabrous on the back. Corolla smooth, 

 purple, 3-nerved ; superior valve slightly ciliate on the margin 

 under a lens, recurved, persistent, giving the ruchis a pectinate 

 appearance when old. Seed oblong, brown. 



Hab. In sandy fields; sometimes in wet sandy meadows. On 

 the Isiand of New-York. About Passaic Falls, New-Jersey. 

 In Pennsylvania. Muhlenberg. July — August. 



This species should be compared with P. /lilosa of Lin- 

 naus, (Eragrostis fiilosa P. de Bcauv. and Roem. tS* 

 Schult. II. p. 575 ) to which it appears to be nearly allied. 

 It also resembles P. tenella Retz. 8c JVilld.j and P. /ilu- 

 viosa Retz., but is probably distinct. 



20. P. rcptujis J\l i c h.: dioicons ; culm branched, creep- 

 i^>e;; panicle fas'-ioled ; spikelets linear-lanceolate, 12 — 20- 

 fiO-.vered ; fl >rets acuminate. Mich. Fl. I. p. 69. t. 11. 

 Pnrsh, Fl. I. p. «i. Muhl. Gram. p. 142. Elliott 



