. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 166 GRAMTNEAE (GRASS FAMILY) of the spikelet, usually subcoriaceous and rigid, several-nerved, Usually shortei tiianthe florets, acute or awned ; lemmas convex or slightly keeled above, 6-7- nerved, acute or awned from the apex; palea shorter than its lemma, bristly- ciliate on the keels ; grain pubescent at the summit, usually adherent to the palett, —Perennials with simple culms and terminal spikes. (Name from iyp6s afield, and irup6s, wheat.)
. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 166 GRAMTNEAE (GRASS FAMILY) of the spikelet, usually subcoriaceous and rigid, several-nerved, Usually shortei tiianthe florets, acute or awned ; lemmas convex or slightly keeled above, 6-7- nerved, acute or awned from the apex; palea shorter than its lemma, bristly- ciliate on the keels ; grain pubescent at the summit, usually adherent to the palett, —Perennials with simple culms and terminal spikes. (Name from iyp6s afield, and irup6s, wheat.) Culms solitary or few, erect from creeping rootstocks. Lemmas densely pubescent » , , i, A. da&yetaohyum. Lemmas glabrous or scabrous. Leaves flat, thin, with fine scarcely prominent nerves . , . B. A, rep&ns. Leaves becoming involute, thick, with prominent thick nerves. Glumes faintly nerved, long-acuminate 1, A. Smiihii, Glumes strongly nerved, abruptly narrowed to a rather blunt point 2, A. pungens. Culms tufted ; no creeping rootstocks. Awn not longer than the lemma. Glumes thin, widened above the middle 5. A, bijtorztm. Glumes firm, narrowed from below the middle , • . , B. A, ienerum. Awn about twice the length of the lemma. Spike nodding, symmetrical 7. A, caninwrn. Spike erect, one-sided ... .... 8. .4. Bichardsonii. A. Smithii Rydb. (Blue-joint.) Glaucous ; culms rigid, .3-15 dm. rigid, bluish green, scabrous, becoming involute, 1-2 dm. long, 4-6 mm. wide, basal leaves longer; spikes dm. long; spikelets 7-13-flowered, cm. long, usually somewhat dis- tant, glabrous or nearly so, acute, compressed, divergent, some- times in pairs; glumes acuminate, ^ or | as long as spikelet, nerves usually faint; lemmas mucronate or awn-pointed, hard, faintly nerved. (A. occidentale Scribn.; A. spicatum Scribn. & J. G. Sm., as to description, not Festuca spicata Pursh.) — Prairies, Mich, to Kan., and westw. July. — Rootstock aud lower portion of culms
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