spinulose

This species is easily recognized by its shortly plumose awn, spinulose lemma apex, and hairy basal sheaths.

raceme rachis triquetrous, margins spinulose.

Spike linear to oblong; spikelets with 2 florets; lemma sharply keeled, keel pectinate spinulose.

Leaf sheaths spinulose; fruit ellipsoid to narrow-ellipsoid; vittae 4 on commissure.

lateral segments oblique-ovate, usually 2-lobed, abaxially purplish red or tawny, margin crenate with spinulose bristles.

Leaf blade ovate or ovate-lanceolate; male glomerules compact; achene ca. 1. 2 mm, spinulose-verrucose.

Achene orange, oblong-ovoid, ca. 1. 5 mm, slightly compressed, spinulose-verrucose.

Achene oblong-ovoid, ca. 0. 8 mm, compressed, oblique, spinulose-verrucose.

Leaf blade thickly leathery, apex acute and spiny, margin entire or 1-3-spinulose-serrate.

Culms and outer surface of leaf blades scabrid or shortly spinulose.

bracts ovoid, 7-10 mm, papery, spinulose, apex acuminate.

bracts and bracteoles 1. 5-3 cm, lacking spinulose hairs.

2 (1) Leaf blade black when dry; petiole 1-2 cm; achene spinulose-verrucose.

Spikelets narrowly elliptic to subround, plump, plano-convex, often hispidulous or spinulose, acute to awned;

lower glume cartilaginous to leathery, often spinulose;

leaf blades spinulose on outer surface;