. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. GRAMINEAE. Vol. I. i. Sphenopholis obtusata (Michx.) Scribn. Early Bunch-grass. Fig. 586. Aira obtusata Michx. Fl. Bor. Am. 1: 62. 1803. Eatonia obtusata A. Gray, Man. Ed. 2, 558. 1856. Eatonia pubescens Scribn'. & Merr. Circ. U. S. Dep. Agr. Agrost. 27: 6. 1900. E. robusta Rydb. Bull. Torr. Club 32: 602. 1903. 61. obtusata Scribn, Rhodora 8: 144. 1906. Cul
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. GRAMINEAE. Vol. I. i. Sphenopholis obtusata (Michx.) Scribn. Early Bunch-grass. Fig. 586. Aira obtusata Michx. Fl. Bor. Am. 1: 62. 1803. Eatonia obtusata A. Gray, Man. Ed. 2, 558. 1856. Eatonia pubescens Scribn'. & Merr. Circ. U. S. Dep. Agr. Agrost. 27: 6. 1900. E. robusta Rydb. Bull. Torr. Club 32: 602. 1903. 61. obtusata Scribn, Rhodora 8: 144. 1906. Culms i°-2i° tall, erect, simple, often stout, smooth and glabrous. Sheaths shorter than the internodes, usually more or less rough, sometimes pubescent; ligule ¥'-i" long; blades 1'-9' long, 1 "-4" wide, scabrous; panicle 2'-6' in length, dense and generally spike-like, strict, the branches ii' long or less, erect; spikelets crowded, ii"-i4" long; empty scales unequal, often purplish, the first narrow, shorter than and about one-sixth as wide as the obtuse or almost truncate second one; flowering scales narrow, obtuse, l"-i" long. In dry soil, Maine to Saskatchewan, Florida and Arizona. Prairie-grass. June-Aug. 2. Sphenopholis pallens (Spreng.) Scribn. Tall Eaton's Grass. Fig. 587. Aira pallens Spreng. Fl. Hal. Mant. 33. 1807. Eatonia Pennsylvania a A. Gray, Man, Ed. 2, 558, in part. 1856. 5. pallens Scribn. Rhodora 8: 145. 1906. Usually glabrous, culms l°-3° tall, erect, simple, slender, smooth. Sheaths shorter than the inter- nodes; ligule I" long; blades 2Y-7' long, i"~z" wide, rough; panicle 3'-7' in length, contracted, often nodding, lax, its branches i'-2i' long; spikelets ii"-lf" long, usually numerous, some- what crowded and appressed to the branches; empty scales unequal, the first narrow, shorter than and about one-sixth as broad as the obtuse or abruptly acute second one, which is smooth, or somewhat roug
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