Andropogon bourgaei Hack.

Andropogon bourgaei Hack. Flora 68 : 134. 1885
Andropogon glaucescens Fourn. Mex. PL Gram. 60, in part. 1881. Sorguni Bourgaei Kuntze, Rev. Gen. 791. 1891.
Stems 1 m. tall or more, sparingly branched above, the branches usually in pairs; leafsheaths glabrous; blades 4-6 mm. wide, linear, acute, rough, especially on the margins, glabrous or somewhat hairy, those on the innovations up to 3 dm. long, those on the stem up to 2 dm. ; spathes 5-6 cm. long, glabrous; racemes 4-6 cm. long, in pairs or in 3's on a peduncle which is barbed at the apex, exserted from the spathe, nodding, the internodes of the rachis slender, equaling the sessile spikelets; sessile spikelet 4-5 mm. long, the first scale acute, nerveless except for the hispidulous keels, the intercarinal space somewhat depressed and glabrous, the callus barbed with hairs more than one half as long as the scale, the fourth scale lanceolate, 1 -nerved, entire, awnless; pedicellate spikelet usually staminate, rarely empty or reduced to a single scale, 5-5.5 mm. long, lanceolate, the first scale 5-nerved, the second 3-nerved.
Type locality : Orizaba, Vera Cruz. Distribution : Vera Cruz.