ORDER 155. GRAMINE^. 387 



capillary branches ; gl. unequal, shorter than the pales ; beard very short, not half 

 the length of the pales, ll Sandy swamps, N. J. : rare. Sept. 



2 C. loiigifolia Hook. Stout, 3 4f; Ivs. rigid, involute, long-filiform-pointed ; upper 



glume'as long as the pales ; ha'rs half as long. Shores of the great lakes. Ang. 



3 C. Caiiadeiisis Beauv. (c) Slue-joint. Rigidly erect, 3 of; leaves flat; panicle 



oblong, its branches in 4's and 5 n s ; gl. longer (H'O than the pales, purplish ; awn from 

 the middle of the pale, as fine as the long beard. A good grass : common N. July. 



4 C. Langsdorfii Trin. Spikelets 2J" long ; awn stouter than the soft beard. Other- 



wise like No. 3. White Mts., N. H., Isle Royal, L. Sup. (Porter). August. 



5 C. coiit'iiiis Nutt. (a) Lvs. flat, panicle narrow, dense, reddish; gl. ovate, 2", 



equaling the flower (b) ; beard i shorter than the pales ; awn from below the middle, 

 not exserted. Culm 2 5f. Penn. (Jackson), Penn Yan, N. Y. (Sartwett). July. 



6 . slricta Trin. Differs from No. 5 only in its rigid leaves rolled at the point, its 



awn from below the middle, its beard as long as the pales. Lakes, N. Aug. 



7 C. \ uttallia.ua Steud. Lvs. flat; pan. dense; glumes 3", long-pointed, $ longer 



than the pales ; awn from near the tip of the pale ; beard some shorter than the pale. 

 Swamps, Mass, to N. Car. (C. coarctata Torr.) Ang. 



8 C, piirpurascciis Dr. Culm 1 Iff; pan. spike-like, 3 7', purplish; gls. rather 



obtuse, less than 2" ; beard scanty, short, f as long as the rudiment, J as long as the 

 pales ; awn short, straight. White Mountains, N. H., Mt. Marcy, N. Y. (Peck.) 



9 C. Porterl Gr. Slender, 2 4f; Ivs. flat; pan. very narrow, 46'; glumes fully 2", 



exceeding the pales ; hairs few, short, almost none at the base of the lower pale ; awn 

 contorted. Huntingdon Co., Penn. (Porter). July. 



IOC. areimria Roth. Sand Reed. Rhizomes creeping extensively, culms stout, 

 erect, 2 41'; Ivs. rolled and rush-like ; pan. spike-form, withered appressed branches 

 6^10' ; spkl. very flat. Sandy beaches, northward. August. 



11. ALOPECURUS, L. FOX-TAIL G. Spike- 

 lets l-fl\vd. Gl. flat-keeled, connate at base, sub- 

 equal. Upper pale 0, lower flat-keeled, awned 

 on the back below the middle. Sta. '3. Panicle 

 contracted into a cylindric dense spike. 



1 A. arist ulat us MX. Wild F. Ascending from a bent base, 1 2f, glaucous ; spike 



slender, 1 2' by 2J", grayish ; glumes (a) and pale obiuse, equal ; awn (b) scarcely 

 exserted (c. ovary and stigma*). In wet places. June August. 



2 A. geuiculAtus L. Sent F. Ascending from a bent base, 1 2f; spike 2 2f : 



upper leaf scarce longer than its sheath ; glumes pubescent, obtuse ; awn geniculate, 

 far surpassing the culm. Wet meadows, East. 



3 A. prateiise L. Meadow F. Erect, stout, 1J 2^f; spike about 2'; upper leaf 



shorter than its sheath ; gl. ciliatc ; awn twisted, nearly thrice longer than it.s pale. 

 Fields and pastures, Northern States. A good grass. 



12. PHLEUM, L. CAT-TAIL G. Glumes equal, 

 flat-keeled, mucronate or rostrate, longer than the 

 truncate awnless pales. Compound spike cylindric 

 and very dense. June, July. 



1 P. pratcnse L. Timothy. Herd's G. (a) Erect, rigid, 



2 4f ; Ivs. broad-linear, flat ; glumes alike cuspidate, in a 

 long dense terete green spike. A grass of the highest value 

 for hay in the North, but will not flourish South. 



2 P. alpiiium L. Erect, If; Ivs. shorter than the sheaths; spike oblong-ovoid, 4 5' 



long ; awns as long as their glumes. White Mountains, and Arctic Am. 



13. CRYPSIS, Ait. Compound spk. oblong, mauy-bracted and sheathed 



