Poa. CLXI. GRAMINEZ. 615 
lvs. lance-linear, short, smooth, carinate, on loose, glabrous sheaths ; stip. oblong, 
dentate ; panicle spreading, the branches generally solitary, at length horizontal ; 
spikelets ovate-oblong, rather numerous, containing about 5, loose flowers.—@ A 
small, abundant, annual grass, N. Eng. to Ohio, forming a dense, soft and 
beautiful turf. May—Sept. 
9. P. NeRvaTa. Willd. (P. striata. Michx. Briza Canadensis. Nutt.) Foul 
Meadow.—St. smooth, 3—4f high; Jvs. lance-linear, striate, rough above, 
about a foot long, on striate, roughish sheaths; stip. lacerate; panicle large, 
loose, diffuse, equal, branches weak, pendulous in fruit, long and capillary, in 
2s or 3s; spikelets ovate-oblong, containing about 5, obtuse, conspicuously 7- 
veined flowers.—2 A beautiful and valuable grass in wet meadows, N. Eng. to 
Mich. June. 
10. P. evoneAéta. Torr. 
St. round, erect, smooth, 3f high; dvs. narrow-linear, smooth, 8—15’ long ; 
sheaths striate, smooth; stip. very short; panicle (8—10’) elongated, racemose, 
nodding, branches solitary or in 2s, appressed; spzkelets ovate-obtuse, tumid, 
mes ori about 3, obtuse, 5-veined flowers.—2| Wet meadows N. Eng. to 
ll. July. 
11. P. opttsa. Muhl. 
St. smooth, firm, 2—3f high; Jvs. dark green, linear, often surpassing the 
stem, and with the sheaths smooth; panicle dense, ovate, many-flowered, 3—4’ 
long; spikelets ovate, tumid, thick, containing 5—7, smooth, ovate, obtuse flow- 
ers ; lower palea 7 veined.—2| Swamps, N. Eng.toPenn. <Aug., Sept. 
12. P. conrerTa. Ell. (P. glomerata. Wali.) 
St. erect, geniculate, 2—3f high; lvs. glabrous, flat, serrulate on the mar- 
gin; panicles terminal and axillary, 4—8’ long, erect, compressed, with the 
spikelets densely clustered ; spikelets 8-flowered, glabrous.—2| Penn., Schweinitz 
(fide Beck), S. to Car. 
13. P. mopesta. Tuckerman. 
St. short, geniculate at base, branched, compressed, glabrous; dvs. 3—4’ 
by 3’’, rather rigid; sheaths striate, smoothish; stip. conspicuous, truncate, erose 
and laciniate; panicle strict, 6—9’ long, branches solitary, filiform, scabrous; 
spikelets scattered, briefly pedicellate ; glwmes unequal, obtuse, erose, glabrous ; 
lower fl. larger, sessile, veinless; caryopsis ovate, fuscous.—Brooksides, Cam- 
bridge, Mass. E. T. 
14, P. Canapensis. Torr. (Briza Canadensis. Michz.) 
St. round, smooth, erect, 3—4f high; dvs. broad-linear, rough, glaucous, 
on smooth sheaths; stip. lacerate, ovate-obtuse; panicle large, 6—8’ long, 
branches flexuous, in half-whorls, much spreading or pendulous in fruit; spike- 
lets short, ovate, tumid, 6—8-flowered; glwmes much shorter than the lower 
flower; upper palea very obtuse, lower about 7-veined ; sta. 2—2| A large and 
beautiful grass, in shady grounds, Free States,Can. July, Aug. 
15. P. cAPILuARis. 
St. much branched at base, smooth, a foot high; dws. linear, attenuated 
above, flat, smooth ; sheaths striate, with long hairs about the throat and mar- 
gin; stip. short; panicle very large (near a foot long), with diffusely spreading, 
capillary branches, axils smooth; spikelets ovate, acute, about 3-flowered, on 
long pedicels ; palee scabrous.—@ Dry grounds, U.S. Aug. 
16. P. nirstta. Michx. 
St. subsimple, compressed, erect, 1—2f high; Jvs. lance-linear, attenuate 
at end, surpassing the stem, hairy at base; sheaths loose, longer than the inter- 
nodes, lower ones hairy, upper ones smooth; stip. fringed; panicle very large, 
capillary, branches spreading, reflexed in fruit, hirsute in the axils; spikelets 
oblong, about 5-flowered; palee ciliate—2 Sandy fields. July, Aug. 
B. ‘ oapaiaae (Torr. P.spectabilis. P.) (Spikelets linear, 10—15-flowered 
st. taller. 
17. P. maritima. Huds. 
St#. somewhat geniculate, round, about a foot high; lvs. somewhat glau- 
cous, rough-edged, spleen panicle erect, dense, branches in pairs, scabrous ; 
D2 
