564 GRAMiNE-ffi. (GKASS FAMILY.) 



3. E PIL6SA, Bcauv. Panicle elongated-oblong, -with rather cvc.'t branches 

 (except at flowering-time) ; npikdcls 5 -12-flowered (2" -4" long-, purplish-lead- 

 color), becoming linear, about equalling their pedicels ; glumes (small) and louer 

 palea obtuse, the latter broadly ovate, \-in-rrul (lateral nerves obsolete). (!'. pilo- 

 sa, L. P. Linkii, Knnth.) Sandy or gravelly waste places, 8. New England 

 to Illinois, and southward. Aug. Plant G'-12' high. (Nat. from En.) 



4. E. FrailKii, Meyer. Much branched, dillnse (:j'-8' high); panicle 

 ovate-oblong-, rather dense, spreading; spikelets 2 - 5-Jtowered (l"-l" long) on 

 slender pedicels ; glumes very acute: loicer pafea ovate, acute, rather obscurely ,*?- 

 nerved. (E. erythrogona, Nets, from the joints of the culm being mostly red- 

 dish.) Low or sandy ground, Ohio to Illinois (opposite St. Louis, Itnomiioml, 

 Engelmann), and south westward. Aug. 



5. E. Plil'Sllii, (Benin. 1 ?) Schrad. Sparingly branched at the decum- 

 bent base, then erect (^- 2 high); panicle elongated, the branches widely 

 spreading, very loose; spilcclds 5-lS-jloivcred, oblong-lanceolate, becoming 

 linear (2" -4" long), mostly much shorter than their capillary pedicels; glumes and 

 lower palea ovate and acute, or the latter acidish, 3-nerved. (Poa tenella? Pursh. 

 P. Caroliniana, Spreng. P. peetinacca of authors, not of J\ I'ich.v.) Sandy or 

 sterile open grounds, New Jersey to Virginia, and southward. 



*- - Culms simple or branching only at the very base, Jinn, erect, from an annual or 

 perennial root, mostly forming thick tufts: leaves very long : panicle very large, com- 

 pound, often longer than the culm, with elongated and loosely floirered branches ; their 

 ixils often bearded. 



6. E. tennis. Panicle virgately elongated (l-2i long), very loose, the 

 spreading branches bearded in some of the lower axils, their remote divisions 

 and long diverging pedicels capillary; spikelets 2-6- (sometimes 7 -12-) flow- 

 ered, pale or greenish ; glumes lanceolate or aid-shaped, vert/ acute (l"-2" long), 

 membranaceous, as arc the oblong-lanceolate acute flour rx : loirer palea distinctly 3- 

 nerved; the upper ciliate-seabrous. ty? (Poa tennis, Ell. P. capillaris, Michx. 

 P. trichodes, Nutt. E. Geyeri, Stend.) Sandy soil, Illinois, Virginia'? and 

 southward. Aug. -Oct. Leaves rather rigid, U-2 long, glabrous or spar- 

 ingly hairy: the sheaths hairy or glabrous ; the throat strongly bearded. Flow 

 ers much larger than in the next, fully \\" long. 



7. E. capilluris, Kees. Panicle, widely expanding, usually much longer 

 than the culm, its spreading branches (mostly miked in the axils) and long 

 diverging p<-dic.els capillary; .sy>//Wr/x rather hrdc, very small, 2 - 4-flowered, 

 greenish or purplish ; glumes and flowers ovate, acute (less than 1'' long) ; lower 

 palea obscurely 3^ierved, scarcely keeled, the upper rough-ciliatc. (i (Poa capil- 

 laris, L. P. hirsnta, Michx.) Sandy drv soil and lields ; common, especially 

 Southward. Aug., Sept. Leaves and sheaths either very hairy or nearly gla- 

 brous, the former about 1 long, not rigid. Panicle l-2 long, becoming very 

 wide, and diffuse. 



8. E. pectinucoa. Panicle, widely diffuse, its 7'igid divergent main 

 branches bear/I'd hi the nrih ; the capillary pedicels more or A-st oppressed on the 

 uecondary branches; ,sy;//vA /.> flat, 5 - 15-Howered, lu'coming linear, ]>urple or 

 purplish-tinged ; glumes and ilowers ovate or oblong-ovate, acutish ; lower /mli it 



