GRAMINE^E. (GRASS FAMILY.) 661 



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

 ovate-oblong, rather dense, spreading ; spikelets 2 - ^-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. Penn. to Kan., and southwest- 

 ward. Aug. 



3. E. Plirshii, Schrader. Sparingly branched at the decumbent base, 

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

 very loose ; spikelets 5 - \%-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. 



i- H- Culms simple, or branching only at the very base, firm, 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 (H- 

 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, 1^-2 long, gla- 

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

 bearded; flowers much larger than in the next, fully Ij" 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 1" 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 hairy, 

 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 reflexed 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, 



