Andropogon hallii Hack. Sand Bluestem Habit: Tufted perennial resembling Andropogon gerardii but with elongated creeping rhizomes. Culms: Robust, 1-2 m. tall, simple at the base, branched above, more or less glaucous, glabrous or nearly so. Blades: Flat, 20-30 cm. long, 5-8 mm. wide, smooth beneath, slightly scabrous above, margins scabrous. Sheaths: Shorter than the internodes, glabrous and glaucous. Ligule: Membranous, 3-4 mm. long, villous just back of ligule. Inflorescence: Spikelike racemes, 2-5 on peduncles, in pairs, or approximate, 5-10 cm. long, the lateral ones often included in the sheaths, rachis internodes 4-5 mm. long, copiously villous, bearing in pairs a sessile fertile spikelet and a pedicelled staminate one, the pedicel copiously villous, the hairs grayish to pale golden. Spikelets: Sessile spikelets about 1 cm. long, awned; pedicellate spikelet slightly larger, awnless. Glumes: Of fertile spikelet subequal, glabrous at the base, pubescent towards the apex and on the margins. Lemmas: Sterile lemma empty, hyaline, awnless, fertile lemma membranous or hyaline, shorter than the glumes, awnless or with an awn usually less than length of the spikelets. Habitat: Sandy soil, prairies and plains, sandhills. July-September. Range: North Dakota and eastern Montana to Texas, Wyoming, Utah and Arizona; Iowa. Kansas Range: West half. Use: Native grass on sandy plains. Remarks: Intergrades with Andropogon gerardii. Synonyms: Andropogon gerardii Vitman var. incanescens (Hack.) Boivin Andropogon gerardii Vitman var. paucipilus (Nash) Fern. Andropogon hallii Hack. var. incanescens Hack.