Andropogon gerardii var. gerardii

Andropogon chrysocomus Nash, in Britton, Man. 70. 1901
A tall usually stout perennial with extravaginal innovations. Stems 7-15 dm. tall, the branches in I's-S's; leaf-sheaths smooth and glabrous; blades up to 3 dm. long, 7 mm. wide or less, smooth beneath, a little roughened above; racemes in 2's-4's, 5-9 cm. long, stout, longexserted, the hairs of the internodes and pedicels 3-4 mm. long, usually yellow; sessile spikelet S-10 mm. long, lanceolate, barbed at the bg^e with hairs about 1 mm. long, the first scale hispid on the keels, the margins broadly infolded, the intercarinal space canaliculate-depressed and hispidulous toward the apex, the second scale hispid on the keel toward the apex,the fourth scale 2-toothed at the apex, bearing a perfect geniculate awn 10-12 mm. long; pedicellate spikelet equaling the sessile one, awnless.
Type locality : [Stevens County,] Kansas. Distribution : Nebraska and Wyoming to Texas.

Andropogon tennesseensis Scribn. Circ. U. S. Dep. Agr
Agrost. 16: 1. 1899.
-Andropogon provincialis tennesseensis Scribn. Bull. Tenn. Kxp. Sta. 7: 23. 1894.
Stems 1-1.5 m. tall, stout, the branches in I's or 2's; leaf-sheaths, at least the lower ones, hirsute toward the summit; blades 6 dm. long or less, 6-12 mm. wide, rough, the lower surface sometimes hirsute, and also the upper surface near the base; racemes in 2's-4's, 5-8 cm. long; sessile spikelet about 8.5 mm. long, broadly lanceolate, twice as long as the hispidulous internodes, strongly hispidulous, the awn of the fourth scale geniculate, about 1.5 cm. long, the spiral column a little exserted; pedicellate spikelet 8-10 mm. long, of. 4 scales, perfect, strongly hispidulous, the first scale often short-awned, the hispidulous pedicel less than one half as long as the sessile spikelet.
Type locality : Near Knoxville, Tennessee. Distribution : Tennessee and Mississippi.