ORDER 155. GRAMINEJE. 



387 



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

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



2 C. loiigifolla Hook. Stout, 9 4f; Ivs. rigid, involute, long-filiform-pointed ; upper 

 glume as long a? the pale? ; hairs half as long. Shores of the great lakes. Aug. 



S C. Caiiadeiisls Beauv. (c) Blue-joint. Rigidly erect, 3 5f; leaves flat; panicle 

 oblong, its branches in 4's and 5's ; gl. longer (1J") 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. Laiigsdorfii Trin. Spikelets2J" long; awn stouter than the soft beard. Oilier- 

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



*> C. coufiiils Nutt. (a) Lvs. flat, panicle narrow, dense, reddish; gl. ovate, 2". 

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

 iiot exserted. Culm 2 5f. Penn. (Jackson), Penu Yan, N. Y. (Sartwell). July. 



(> C. Mtrii-ta Trin. Differs from No. 5 only in its rigid leaves rolled at the point, ite 

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



7 C. N 11 1 tal liana Steud. Lvs. flat; pan. dense; glumes 3", long-pointed, i 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.) Aug. 



8 C. purpurascens Br. Culm 1 l^f; pan. spiku-like, 3 7', purplish; gls. rather 



obtuse, less than 2" ; beard scanty, short, I as long as the rudiment, J as hv.ig as thr 

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



9 C. Porter! Gr. Slender. 2 4f; Ivs. flat; pan. very narrow, 4 & ; glumes fully 2". 



exceeding the pales ; hair? few. short, almost none at the base of the lower pale ; awn 

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



10 Ct ari'iia.ri.1 Roth. Sand Reed. Rhizomes creeping extensively, culms stout, 

 ereci, 2 4f; Ivs. rolled and rush-like ; pan. spike-form, withered appressed branches 

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



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

 lets 1-flwd. Gl. flat-keeled, connate at base, sub- 

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

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

 contracted into a cylindric dense spike. 



1 A. a rist u Iiitu* MX. Wild F. Ascending from a bent base, 1 2f, glaucous ; spike 



slender, 12' by 2J", grayish; glumes (a) and pale obiuse, equal ; awn (ft) scarcelv 

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



2 A. geuiculatug L. Bent F. Ascending from a bent base, 1 2f; spike 2 2f ; 



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

 far surpassing the culm. Wet meadows, East. 



3 A. pratense L. Meadow F. Erect, stout, 1J 2|f; spike about 2'; upper leal 



shorter than its sheath ; gl. ciliate ; awn twisted, nearly thrice longer than its pale 

 Fields and pastures, Northern States. A good grass. 



12. PHLEUM, L. CAT-TAIT. 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 O. (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. al |iii n us L. Erect, If ; Ivs. shorter than the sheaths; spike oblong-ovoid, 4 S 



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



13. CRYPSIS, Ail, Compound spk. oblong, many-bracted and sheatbeO 



