OHDEK 155. GRAMINE^E. 401 



8 E. tciiuls (Ell. Poa trichodes N.) Plant 1 8f high; pan. long (824), loc?e, 

 capillary, bearded in the lower axils; spikelets 3(2-6)-flwd. (sometimes 7-9-flwd. 

 Gray) ; pales and glumes lanceolate, hyaline, 3-veined, 1J" long. 2t 111., and S. 



R E. caplllaris (L.) Like E. tennis, but the spikelets are minute (1 1J"), the fls. 

 24, acute, scabrous, with only the midvein apparent. 2{ Sandy fields. Aug. 



10 E. nittda (Ell.) Plants 4f, glabrous and polished (except the bearded throat ol 

 the long, rolled Ivs.) ; pan. H 3f long, narrow, branches some whorled ; spkl. lance- 

 iinear, 3 4", 5-12-flwd., on capillary divaricate pedicels ; gl. and pales acute, 

 3-veined, often purplish, 1" long, v Marshes, 111. (.]. Wolf), and South. 



11 E. pectliiacea (Mx.) Gr. (E. hirsnta [Ell. etc.]). Culm 1 8f, rigid; sheatht 

 some hairy; pan. very large, branches rigid, the lower deflexed in fruit ; spkl. (,/) 

 oblong, purple, 2 3" ; fls. 5 15, oval, acutish, strongly 3-veined. 1[ Sandy fields 

 July, Aug. (Poa spectabilis Ph.) A showy grass, sport of the winds when dry. 



45. POA, L. SPEAR G. MEADOW G. Spike- 

 lets 2-5(rarely -9)-flwd., compressed. Glumes sub- 

 equal, pointless, shorter than the contiguous fls. 

 Pales herbaceous, soft, awnless, the lower com- 

 pressed-carinate, 5-veined, usually clothed at base 

 with a cobweb-like wool. Grain free. Smooth 

 grasses, with soft flat leaves, and paniclt'd flowers. 



Branches of the panicle in 2's, 3's, or often single. .(*) 

 Branches of the panicle in about 5's, half-whorled. .(**) 



* Fls. not webbed, merely pubescent on the back... (a) '.i^pfiS 



* Flowers webbed together at the base with gossamer-like wool. . .(I) 



a Annual or biennial. Panicle dense, spikelets subsessile ..No. 1 



a Perennial. Panicle loose, spikelets long-pedicelled Nos. 2, S 



b Spikelets 2- or 3-flowered. on slender pedicels NOB. 4 7 



b Spikelets mostly 5-flowered ovate, short-pedicelled Nos. 8, 9 



** Spikelets 2^4-flowered, loosely pedicelled. Panicle large Nos. 10 12 



** Spikelets 3-5-flowered, subsessile, panicles rather dense Nos. 13, 14 



1 P. a it 11 11 i L. Low (3 8'), tender, spreading; culms flattened: Ivs. 2 4' by 12"; 



pan. 23', den;-e ; spikelets ovate-oblong, nearly sessile, loosely 5-7-flwd.. 2 2J"; fls. 

 lanceolate, acutish. (f) Fiolds and lawns, forming a sott, dense turf. Com. Eur. 



2 P. flexuosa Muhl. Culms erect, 12 iO'; ivs. linear, 25'; pan. very thin and 



open : branches filiform, often flexuous, long (23'), bearing the spikelci's near the 

 end: fls. 36, lance-linear, 4}", 3-veined, remote. 11 Woods, Va., Ky., and S. 



3 P. liexantliii Wood. Weakly erect, 1J 2f, leafy to the top ; branches of the thin 



panicle filiform, suberect, straight, 2 4' ; spkl. fnw, terminal, oblong, 3 4" ; Jls. six 

 (5 7), oblong, 1J", 5-veined, very obtuse. 2f Meadows, A'lanta, Ga. 



4 P. brevifolia Muhl. Culm compressed, 1 2f, its Ivs. generally short (i 2'). ab- 



ruptly cuspidate, root Ivs. long, pointed ; pan. loose, branches filiform, spreading; 

 spikelet ovate, purplish ; fls. 3 or 4, 2J", lanceolate, 5-veined, webbed. 2f Pa. to 111. 



5 P. debllls Torr. (d) Culms terete, weak, If 2f; pan. loose, some spreading, 



branches capillary, in 2's and 3's ; spkl. (e) few, ovate ; fls. (f) 3(2 4). broadly oblong, 

 very obtuse, 1J", the glumes ovate, 1" ; ligule oblong, acute, li Woods, R. I., and W. 



8 P. <lin .1 11 Ilia Wood, (a) Culm compressed, very slender, 1$ 2f; Ivs. long, 1" 

 wide ; ligule short, truncate ; pan. slender, branches in 1's and 2's, fuberect ; spkl. (61 

 ovate; fls. (c) 2(13), linear -oblong, acute, H" ; gl. I as long, y Fields, Ala. M iy. 



T P. laxa Hoenke. Culms tufted, 6 8'; Ivs. erect, 1 3'. very narrow: pan. open. 

 1 2' long; spkl. few, 2i" long; glumes acuminate, as long as the (3) purplish flu 

 (If) ; lower pale villous on the keel. 11 Mountains, N. 



20 



