Muhlenbergia texana Buckley

Muhlenbergia texana Buckl. Proc. Acad. Phila. 1862: 91 1863.
Muhlenbergia Buckleyana Scribn. Contr. U. S. Nat. Herb. 1: 56. 1890. (Based on M. texana
Buckl. Name changed because supposed to be antedated by M. texana Thurb. 1874.) Podosaemum texanum Bush, Am. Midi. Nat. 7: 41. 1921. (Based on Muhlenbergia texana Buckl.)
Annual; culms delicate, usually branched at base and often at the lower nodes, erect or usually decumbent at base, puberulous, 10-20 cm. tall; sheaths puberulent, mostly longer than the internodes; ligule thin, .scarely 1 mm. long; blades mostly less than 5 cm. long, about 1 mm. wide, scabrous; panicle oblong, more than half the entire height of the plant, open, the delicate branches ascending or spreading, 2-3 cm. long, .scabrous, the capillary pedicels longer than the spikelets; glumes acute, about 1.5 mm. long, sparsely hirsute; lemma minutely silky on midnerve and margins below, notched at apex, about 2 mm, long, the delicate awn 1-2 mm. long.
Type locality : Northern Texas.
Distribution: Open gravelly places, western Texas and New Mexico to northern Mexico.

Annuals, Terrestrial, not aquatic, 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 internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, 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 and blade differentiated, Leaf blades linear, Leaf blades very narrow or filiform, less than 2 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades more or less hairy, Leaf blades scabrous, roughened, or wrinkled, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, 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 laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes shorter than adjacent lemma, Glumes 1 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar in texture to glumes, Lemma 3 nerved, Lemma body or surface hairy, Lemma apex dentate, 2-fid, Lemma awnless, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs shorter than lemma, Palea present, well developed, Palea membranous, hyaline, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.

Muhlenbergia texana là một loài thực vật có hoa trong họ Hòa thảo. Loài này được Buckley mô tả khoa học đầu tiên năm 1862 publ. 1863.