Trans Pecos Amaranth

Amaranthus obcordatus (A. Gray) Standley, sp. nov
Amblogyne urceolata obcordata A; Gray, Proc. Am. Acad. 5: 168. 1861. Amaranthus urceolatus obcordatus Uline & Bray, Bot. Gaz. 19: 269 1894. Amaranthus urceolatus Jonesii Uline & Bray, Bot. Gaz. 19: 269. 1894. Stems stout, 1.5-5 dm. high, branched, the branches^ascending, glabrous, whitish, often tinged with red; leaves few, soon deciduous, pale-green, glabrous, the petioles slender, 5-20 mm. long, the blades lanceolate or narrowly oblong to linearoblong, 1-3 cm. long, truncately rounded at the apex, acute or cuneate at the base; flowers monoecious, in dense many-flowered clusters arranged in sparsely leafy or naked terminal spike-like panicles; bracts half as long as the calyx or shorter, broadly ovate, acute; sepals of the pistillate flowers 5, spatulate, 2 mm. long, united at the base, rounded or emarginate at the apex, thin, conspicuously veined, often tinged with purple, the blades spreading in age; sepals of the staminate flowers oblong, obtuse; stamens 3; style-branches 3; utricle narrowly oblong, indehiscent; seed obovoid, 0.6-0.8 mm. long, dark reddish-brown.
Type locality: Western Texas.
Distribution: Western Texas and southern Arizona to Sonora and Sinaloa.