ORDER 155.-GRAMINKJE. 



401 



8 K. teiiuls (EH. Poa trichodes N.) Plant l-8f high; pan. long (S 24 ), loose, 



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

 Gray} ; pales and ^lumeg lanceolate, hyaline, 3-veined, H" long. V 111., and S. 



9 E. eapillarls (L.) Like E. tennis, but the spikelets are minute (1 11"), the fls. 



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



10 E. iiitida (Ell.) Plant 2 4f, glabrous and polished (except the bearded throat of 

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

 iinear, 34", 5-12-flwd., on capillary divaricate pedicels; gl. and pales acute, 

 3-veincd, often purplish, 1" long, 2f Marshes, 111. (-/. Wolf), and South. 



HE. pectluacea (Mx.) Gr. (E. hirsuta [Ell. etc.]). Culm 1 3f, rigid; sheathe 

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

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

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



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

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

 equal, pointless, shorter than the contiguous fls. 

 Pales herbaceous, soft, awnlcss, the lower com- 

 prcssecl-carinate, 5- veined, usually clothed at base a 

 with a cobweb-like wool. Grain free. Smooth 

 grasses, with soft flat leaves, and panic-led 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) 



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



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



a Perennial. Panicle loose, spikelets long-pedicelled No?. 2, 3 



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



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



** Spikelets 2-4-flowcred, loosely pcdicclled. Panicle large Nos. 10 13 



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



1 P. ultima L. Low (38'), tender, spreading; culms flattened; Ivs. 24' by 12"; 

 pan. 2 3', dense ; spikelets ovatc-oblocg. nji.vly sessile, loosely 5-7-flwd., 2 2V; fls. 

 lanceolate, acutish. (f) Fields and lawns, forming a soft, dense turf. Com. Eur. 



2 P. flexuosa Muhl. Culms erect, 1220'; Ivs. linear, 25'; pan. very thin and 



open : branches filiform, often flexuous, long (2-3'), bearing the spikelets near the 

 end; fls. 3 G, lance-linear, 2J", 3-veined, remote, y. Woods, Ya., Ky., and S. 



3 P. lie. \anlli a. Wood. Weakly erect. 1J 2f, leafy to the top ; branches of the thin 



panicle filiform, suberect, straight, 24' ; spkl. few, terminal, oblong, 34" ; fls. six 

 (57), oblong, H", 5-veined, very obtu<e. 2f Meadow?, Atlanta, Ga. 



4 P. breviiolia Muhl. Culm compressed, 1 2f, its Ivs. generally short (| 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. 11 Pa. to 111. 



5 P. debilis Torr. (d) Culms terete, weak, 1$ 2f; pan. loose, some spreading, 



brandies capillary, in 2's and 3's ; epkl. (e) few. ovate ; fls. (/) 3(2 4), broaclly oblong, 

 very obtuse, 1", the glumes ovate, 1"; lignle oblong, acute. ii Woods, R. I., and W. 



O P, diiiantlia. Wood, (a) Culm compressed, very slender, li 2f ; Ivs. long, 1" 

 wide ; ligule short, truncate ; pan. slender, branches in 1's and 2's, guberect ; epkl. (b) 

 ovate ; fls. (c) 2(13), linear-oblong, acute, 1$" ; gl. i as long. y. Fields, Ala. May. 



t P. laxa llcenke. Culms tufted, G 8'; Ivs. erect, 13'. very narrow; pan. open, 

 12' long; spkl. few, 2f long; glumes acuminate, as long as the (3) purplish fla. 

 (If) ; lower pale villone on the keel. y. Mountains, N. 



