Panicum malacophyllum Nash

Panicum malacophyllum Nash, Bull. Torrey Club 24: 198. 1897
Panicum scoparium minus Scribn. Bull. Tenn. Exp. Sta. 7: 48. 1894.
Vernal phase velvety or velvety-pilose throughout; culms slender, few to several in tufts, 25—70 cm. high, more or less geniculate at base with arched internodes, ascending or spreading, papillose-pilose with soft, reflexed hairs, the nodes retrorsely bearded; leaf-sheaths loose, shorter than the internodes, usually less copiously pilose than the culm; ligule 1—1.5 mm. long; blades spreading or ascending, 7-10 cm. long, 6-12 mm. wide, tapering to the rounded base, acuminate, rather thin, velvety on both surfaces, ciliate at least toward the base; panicles usually shortexserted, 3-7 cm. long, at first narrow, the lower branches finally spreading, with short, spikelet-bearing branchlets in the axils; spikelets 2.9-3 mm. long, 1.5-1.7 mm. wide, elliptic-obovate, obscurely pointed, turgid at maturity, papillose-pilose; first glume about one third as long as the spikelet; second glume and sterile lemma equaling the fruit at maturity; fruit 2.2 mm. long, 1.5 mm. wide, elliptic.
Autumnal phase spreading, freely branching from the middle and upper nodes before the maturity of the primary panicle, at length forming bushy, topheavy clumps with reduced blades and numerous secondary panicles.
Typ$ locality: Sapulpa, Indian Territory [Oklahoma]. Distribution: Tennessee to Oklahoma and eastern Texas.

Perennials, Terrestrial, not aquatic, Rhizomes present, Stolons or runners present, Stems nodes swollen or brittle, Stems erect or ascending, Stems geniculate, decumbent, or lax, sometimes rooting at nodes, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem nodes bearded or hairy, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly basal, below middle of stem, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath hairy, hispid or prickly, Leaf sheath hairy at summit, throat, or collar, Leaf sheath and blade differentiated, Leaf blades lanceolate, Leaf blades ovate, Leaf blades 2-10 mm wide, Leaf blades 1-2 cm wide, Leaf blades mostly flat, Leaf blades more or less hairy, Ligule present, Ligule a fringe of hairs, Inflorescence terminal, Inflorescence lateral or axillary, Inflorescence an open panicle, openly paniculate, branches spreading, Inflorescence solitary , with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets dorsally compressed or terete, Inflorescence or spikelets partially hidden in leaf sheaths, subtended by spatheole, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets with 2 florets, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating below the glumes, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes distinctly unequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes 3 nerved, Glumes 4-7 nerved, Lemma similar in texture to glumes, Lemma coriaceous, firmer or thicker in texture than the glumes, Lemma becoming indurate, enclosing palea and caryopsis, Lemma 3 nerved, Lemma 5-7 nerved, Lemma 8-15 nerved, Lemma glabrous, Lemma apex trunca te, rounded, or obtuse, Lemma awnless, Lemma margins inrolled, tightly covering palea and caryopsis, Lemma straight, Palea present, well developed, Palea about equal to lemma, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis.

Panicum malacophyllum adalah spesies tumbuhan yang tergolong ke dalam famili Poaceae. Spesies ini juga merupakan bagian dari ordo Poales. Spesies Panicum malacophyllum sendiri merupakan bagian dari genus Panicum. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh Nash.

Panicum malacophyllum là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Nash mô tả khoa học đầu tiên năm 1897.