Bothriochloa wrightii (Hack.) Henrard

Amphilophis wrightii (Hack.) Nash
Andropogon Wrighiii Hack. Flora 68 : 139. 1885. Sorgum Wrightii Kuntze, Rev. Gen. 792. 1891. Stems up to 1 m. tall, simple, glaucous below the nodes; leaves glaucous; sheaths shorter than the internodes, glabrous; blades up to 2.5 dm. long, 4^6 mm. wide, rigid, smooth, glabrous; racemes subdigitately arranged in 3's-5's, 3-6 cm. long, the internodes of the rachis with the terminal hairs a little shorter than themselves; sessile spikelet 5.5-6 mm. long, the first scale with the margins involute below, narrowly infolded above, the intercarinal space glabrous, shining, 7-nerved, the nerves vanishing below the hyaline apex, sometimes with a pit-like depression above, the second scale 3-nerved, the keel and margins ciliate above, the fourth scale with a perfect awn 12-15 mm. long, the column straight; pedicellate spikelet equaling the sessile one, staminate, the first scale strongly 9-nerved, hispid on the margins abpve, otherwise glabrous.
Type locality : New Mexico.
Distribution : New Mexico and Chihuahua.

Perennials, Terrestrial, not aquatic, Stems nodes swollen or brittle, Stems erect or ascending, Stems solitary, Stems caespitose, tufted, or clustered, Stems terete, round in cr oss section, or polygonal, Stems branching above base or distally at nodes, 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 cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blades mostly glabrous, Leaf blades glaucous, blue-green, or grey, or with white glands, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence with 2 or more spikes, fascicles, glomerules, heads, or clusters per culm, Inflorescence a panicle with narrowly racemose or spicate branches, Inflorescence a panicle with digitately arranged spicate branches, Inflorescence with 2-10 branches, Inflorescence branches paired or digitate at a single node, Peduncle or rachis scabrous or pubescent, often with long hairs, Rachis dilated, flat, central axis to which spikelets are attached, Rachis grooved, Rachis or rachillae sparsely to densely villous, with stiff yellow or red hairs, Flowers bisexual, Spikelets pedicellate, Spikelets dorsally compressed or terete, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets with 2 florets, Spikelets paired at rachis nodes, Spikelets in paired units, 1 sessile, 1 pedicellate, Pedicellate spikelet rudimentary or absent, usually sterile, Spikelets bisexual, Spikelets disarticulating below the glumes, Spikelets disarticulating beneath or between the florets, Spikelets falling with parts of disarticulating rachis or pedicel, Rachilla or pedicel glabrous, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glume with circular pits, Glumes 3 nerved, Lemmas thin, chart aceous, hyaline, cartilaginous, or membranous, Lemma 1 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma distinctly awned, more than 2-3 mm, Lemma with 1 awn, Lemma awn 1-2 cm long, Lemma awned from tip, Lemma awn twisted, spirally coiled at base, like a corkscrew, Lemma awn once geniculate, bent once, Lemma margins thin, lying flat, Lemma straight, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis.

Bothriochloa wrightii là một loài thực vật có hoa trong họ Hòa thảo. Loài này được (Hack.) Henrard mô tả khoa học đầu tiên năm 1941.