GRAMINE.E. (GRASS FAMILY.) 661 



2. E. Frankii, Meyer. Much branched and diffuse (3 - 8' high) ; panicle 

 ovate-oblong, rather dense, spreading ; spike-lets 2 - 5-flowered ( 1 - 1-^" long), on 

 slender pedicels ; glumes very acute; the flowering one ovate, acute, rather ob- 

 scurely 3-nerved. Low or sandy ground, S. Penu. to Kan., and southwest- 

 ward. Aug. 



3. E. Pu.rsh.ii, Schrader. Sparingly branched at the decumbent base, 

 then erect (|-2 high); panicle elongated, the branches widely spreading, 

 very loose ; spikelets 5 - 18-flowered, oblong-lanceolate, at length linear (2 -4-" 

 long), mostly much shorter than their capillary pedicels; glumes all ovate and 

 acute, or the flowering ones acutish, 3-nerved. Sandy or sterile open grounds. 

 Penn. to Mo., and southwestward ; also introduced northward. 



-!- 4- Culms simple, or branching only at the very base, Jinn, erect, mostly form- 

 ing thick tufts ; leaves very long ; panicle very large, compound, often longer 

 than the culm, with elongated loosely -flowered branches, their axils often 

 bearded. (Doubtful perennials, or n. 5 annual.) 



4. E. tenuis, Gray. Panicle virgately elongated (1 -2-$- 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; lower glumes lanceolate or awl-shaped, very acute (1-J- 

 2" long), membranaceous, as are the oblong -lanceolate acute flowers ; flowering 

 glume distinctly 3-nerved ; the upper ciliate-scabrous. Sandy soil, Ohio to 111., 

 Kan., and southward. Aug. -'Oct. Leaves rather rigid, l|-2 long, gla- 

 brous or sparingly hairy; the sheaths hairy or glabrous; the throat strongly 

 bearded; flowers much larger than in the next, fully 1|" long. 



5. E. capillaris, Nees. Panicle widely expanding, usually much longer 

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

 diverging pedicels capillary; spikelets rather terete, very small, 2 - 4-flowered, 

 greenish or purplish ; glumes and flowers ovate, acute (less than \" long) ; flow- 

 ering glume obscurely 3-nerved, scarcely keeled ; the palet rough-ciliate. Sandy 

 dry soil and fields ; common, especially southward. Aug., Sept. Leaves and 

 sheaths very hairy, or nearly glabrous ; the former about 1 long, not rigid ; 

 panicle 1-2 long, soon diffuse. 



6. E. pectinacea, Gray. Panicle widely diffuse, its rigid divergent main 

 branches bearded in the axils ; the capillary pedicels more or less appressed on 

 the secondary branches ; spikelets flat, 5- 15-flowered, becoming linear, purple 

 or purplish ; glumes and flowers ovate or oblong-ovate, acutish ; flowering 

 glume strongly 3-nerved ; palet hirsute-ciliate. Leaves long, rigid, mostly hairv, 

 the sheaths especially so; plant 1-3 high; spikelets 2-3" long, 1" wide, 

 closely flowered. Var. SPECTABILIS, Gray. Leaves and sheaths mostly gla- 

 brous ; branches of the panicle (the lower reflexecl with age) and pedicels 

 shorter ; spikelets rather larger. Sandy dry ground, from E. Mass, near the 

 coast, and from Ohio and 111., southward. Aug. -Oct. 



7. E. campestris, Trin. Glabrous or the sheaths villous at the throat; 

 culm short, bearing an elongated and very open panicle with divaricate branches 

 bearded at base; spikelets linear, flat, 8-12-flowered, sessile or nearly so along 

 the branchlets ; glumes very acute or acuminate, 3-nerved, roughish on the keel ; 

 palet minutely ciliate. (E. pectinacea, var. refracta, Chapm. Poa refracta, 

 Ell.) Del. and Md. to Fla. and Ala. 



