TRIANDRIA D1GYNIA 7 



/*•* 



Also, Briza canadensis. J\ m utt. Gen. 1. p. 69. Not of the Suppl, nor 

 of Mr* JPers. Torr. &c. 

 Nkrvkd Poa. 



Root perennial. Culm 3 to 4 feet hi?h, smooth. Leaves lance-lincar, 6 to 15 in- 

 ches long, striate, smooth beneath, scabrous on the upper surface : sheaths striate, 

 Somewhat scabrous: ligule ol long-ovate, lacerate. Panicle very loose j branches 

 by 2's or 3's, long ami capillary, subdivided, angular, scabrous. Spikelets ovate- 

 oblong, 3 or 4 to 6-flowered ijlorets distinct, caducous. Glumes persistent, vcrj 

 srnull, unequal, lance-ovate, mostly acute or acuminate, membranaceous, nerve 

 less, with a green keel. Palea nearly equal, obtuse ; the lower one lance-ovate, 

 with 7 elevated nerves ; the upper one subcoriaceous, lance-obovate, concave 

 above, or on the back, bordered by the two keels, with the margins folded in, so as 

 nearly to meet on the inner side. Seed ovate, acute, dark brown. 



Uab. Swamps, and along muddy rivulets: frequent. Fl. June. Fr. July. 



V. P. eiont.ata ? Torr. Panicle elongated, racemose ; branches sub- 

 solitary, appressed ; spikelets ovate, obtuse, somewhat tumid, 3 or 4~ 

 flowered ; florets rather acute, 5 or 7-nervcd ; ligule very short. Beck, 



not. p. 4ii. 



Elongated Poa. 



Root perennial. Culm 3 to 4 feet high, smooth. Leaves lance-linear, about a 

 foot long, striate, somewhat scabrous on both sides : sheatlis striate, smooth; Ugule 

 very short, almost obsolete. Panicle 8 to 12 inches long, slender, contracted, race- 

 m se ; branches shorter than in the preceding species, erect, appressed, solitary, 

 or often with a second smaller one, scabrous. Spikelets usually 3 or 4-flowered ; 

 florets fre .». Glumes Dearly equal, membranaceous, keeled. Palea unequal ; low- 

 er one ovate, rather acute, distinctly 5 (or more frequently 7 ?) nerved ; upj>er one 

 a little shorter, subcoriaceous, rounded at apex, somewhat conduplicate. Stamens 

 '11 Seed lance-ovate, acute, reddish brown. 



flab. Swamp, at the Bath: West Chester: rare. Fl. June. Fr. July. 



Obs. Found by D. Townsend, Esq. in 1S29. I am not entirely confident of this 

 species. It is certainly nearly allied to the preceding ; but in the main it agrees so 

 well with Dr. Torrey's description, and also with a specimen received from the 

 Late Mr. Schiceinitz, that I am disposed to give it a place. The ligule and panicle 

 accord well with P. elongata ; and in a number of florets which I examined I con- 

 stantly found but two stamens. The loicer palea, however, though sometimes 5- 

 nerved, is more commonly 7-nerved. 



8. P. capillar is, L. Culm much branched at base ; sheaths pilose 

 at throat ; panicle capillary, large, loose, expanding ; spikelets ovate, 

 acute, 3 to 3-flowered. Beck, Bot. p. 411. Specjm. Gray, Gram. 2. 

 no. 124. 



Also? P. tenuis. Ell. Sk. 1. p. 156. Jfutt* Gcn % I. p. 6G. BarL 

 Phil. 1. p. 62. Eat. Man. p. 269. 



Capillary, or Hair-panicled Poa. 



Root annual. Culm oblique, or ascendincr. 6to 12 inches long, somewhat com- 

 pressed, glabrous, cespitose, and much branched at base. Leaves linear, attenu- 

 ated at the end, finely striate, smooth, (pilose, Mu)d.): shealha nerved, smooth, 

 rather loose, with long hairs at throat, and sometimes along the mar-in; ligule 



