FANfcup. TRIANDRIA. DIGYNIA. - 143 



pubescent and soft beneath, smooth, though sometimes sprink- 

 led with hairs, on the upper surface. Flowers larger than in 

 any other of our species. Calyx 2-flowered, perfect and neu- 

 ter, pubescent ; inferior valve ovate, acute, small ; superior 

 valve obovate. Superior valve of the abortive Jloret half the 

 length of the inferior. Perfect fioret with dark-purple anthers 

 and stigmas. JSfectaries collateral, obovate, unequally 2-cleft. 

 Elliott. 

 Hab. In New- Jersey. Muhlenberg. 



This species I insert on the authority of Mu /W e n 6 e r 5-, 

 not having seen a northern specimen myself. The specific 

 character is from Mi c h a u x, and the detailed description 

 from Elliott. It does not appear to differ much from P. la- 

 tifolium, except in being more pubescent. 



7. F. nervosutn MuhL: culm simple; nodes smooth; 

 leaves broad-lanceolate, smooth, a little ciliate on the margin ; 

 panicle much branched, smooth, many-flowered ; spikelets 

 oblong ; abortive floret antheriferous, with the superior valve 

 subherbaceous, shorter than the inferior. MuhL Gram. 

 p. 116. Elliott Sk. I. p. 122. 



Root perennial. Culm 3 — 4 feet high, smooth. Leaves about 

 6 or 7 inches long, and an inch broad, cordate at the base; 

 texture firm; lower leaves ciliate on the margin, the upper 

 ones naked. Sheaths much shorter than the joints. Stijiule 0. 

 Panicle pedunculate or sessile, 4 — 5 inches long, decompound ; 

 branches flexuous and a little spreading. Sfiikelets nearly as 

 large as in P. latifolium. Inferior glume half as long as the 

 superior, acute, a little spreading ; superior glume obtuse, 

 slightly pubescent, with 7 prominent nerves. Abortive fioret 

 triandrous; superior valve acute. Valves of the /zer/ec^^ore? 

 obtuse, shining, nearly as long as the abortive floret. Stamens 



3 ; anthers and stigmas purple. 



Hab. In moist boggy meadows in the vicinity of Nevv-York> 

 July. 



Nearly allied to P. latifolium, but differs in being much 

 taller, the joints smooth, and the panicle decompound and 

 smooth. 



8. P. macrocarpon* : culm erect, simple ; leaves linear- 

 lanceolate, erect, a httle hairy beneath; joints naked ; sheaths 

 hispid ; panicle rather compound, smooth ; spikelets ovate- 

 globose ; abortive floret neutral. 



Root perennial. Culm about 3 feet high, straight. Leaves 



4 inches long, generally erect, hairy above; the lower ones 

 ciliate on the margin. Sheaths hispid, villous on the margin. 

 Stifiule 0. Panicle with few, spreading, flexuous branches, 

 not much divided. Sfiikelets almost globose, strongly nerved. 

 Inferior glume very broad, carinate. Abortive fiorst with th« 

 superior valve not half the length of the inferior. 



