. A class-book of botany; designed for colleges, academies, and other seminaries ... illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the capitol, lat. 38 3/4 o. Botany; Plants -- United States; Plants -- Canada. Aristida. CLXI. GRAMINE^. 595. Tribe 1. STIPACEjE.—Infloresence panicled. Spikelets solitary, 1-flower- ed. Glumes membranaceous. Paleae mostly two, lower one coriaceous, involute, awned. 1. ARISTlDA. Lat. arista, an awn; characteristic of tlie genus. Panicle contracted or racemose; glumes 2, unequal; palete pedi- cellate,
. A class-book of botany; designed for colleges, academies, and other seminaries ... illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the capitol, lat. 38 3/4 o. Botany; Plants -- United States; Plants -- Canada. Aristida. CLXI. GRAMINE^. 595. Tribe 1. STIPACEjE.—Infloresence panicled. Spikelets solitary, 1-flower- ed. Glumes membranaceous. Paleae mostly two, lower one coriaceous, involute, awned. 1. ARISTlDA. Lat. arista, an awn; characteristic of tlie genus. Panicle contracted or racemose; glumes 2, unequal; palete pedi- cellate, lower one with 3 long awns at the tip, upper one very minute or obsolete. 1. A. DiCHOTOMA. Michx. Poverty Grass. Csespitose; st. dichotomously branching; panicle contracted-racemose; lateral awns very short, the intermediate one nearly as long as the paleae, con- torted.—A slender grass, in sandy soils, U. S., common. Stems 8—12' high, branching at each joint. Leaves very narrow, with very short, open sheaths, and a very short stipule. Spikelets slender, on clavate peduncles. Aug. 2. A. PCRPURASCENS. Poir. St. erect, simple, filiform, 2—3f high; Ivs. very narrow, flat, erect, a foot in length, with short, open sheaths; panicle long, loosely spicate; spikelets on short, clavate, appressed pedicels; aicns nearly equal, divaricate, twice the length of the palese; palece often dark purple.—% Sandy woods, Northern States. Sept. 3. A. GRACILIS. Ell. St. very slender, a foot or more high; Ivs. setaceous, erect, with short sheaths, pilose at the throat; panicle very slender; spikelets somewhat remote, ap- pressed ; lateral awns short, erect, intermediate one longer, spreading. —% Mass. and S. States. A grass of little value, as well as the other species of this genus. 4. A. TUBERCULOSA. Nutt. Long-aicned Poverty Grass. St. erect (declinate at base), 8—20' high, rigid, with small tubercles in the axils of the numerous branches; nodes tumid; Ivs. long and narrow-linear; pan
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