Panicum commutatum Schult.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Poaceae
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Scientific Name
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Description
Species Description - Culms few–several, erect, ascending, or rarely decumbent at base, 3–8 dm, glabrous to sparsely villous or crisp-puberulent; herbage often purple-tinged or ± glaucous; sheaths ciliate to puberulent on the back; ligule none or very short and erose; blades lanceolate, the larger ones 5–12 cm × 7–18 mm, many-nerved, glabrous on both sides, usually sparsely ciliate at the cordate-clasping base; flag-lf nearly or fully as large as those next below; primary panicle eventually exsert, ovoid with spreading or ascending branches, 5–12 cm; spikelets obscurely short-hairy or glabrous, ellipsoid or oblong-ellipsoid, 2.1–3.4 mm, obscurely pointed; first glume two-fifths or half as long (0.7–1.7 mm), triangular-ovate, subacute; second glume and sterile lemma about equaling or often slightly exceeding the fr; autumnal phase branched from the middle and upper nodes, the uppermost primary internode deciduous, the blades not much reduced, the panicles ± reduced and commonly partly included at base; 2n=18. Woods and thickets; Mass. to Mich. and Mo., s. to Fla. and Tex. (P. ashei; P. joorii; P. mutabile; Dichanthelium c.)