UW Burke Herbarium species comparison

Sheaths closed;

ligules 0.5-1 mm. long, hairy;

blades flat, 1.5-4 mm. broad.

Sheaths closed, covered with spreading, soft hairs;

ligules 0.5-1.5 mm. long;

blades flat, hairy, 2-5 mm. broad.

Inflorescence an erect, narrow, crowded panicle 3-10 cm. long, the spikelets exceeding the pedicles;

spikelets 5- to 7-flowered, 1-2 cm. long; first glume 4-6 mm. long, lanceolate, the second slightly longer and wider;

lemmas 6.5-8.5 mm. long, the area between the nerves depressed and concave;

lemmas with straight awns 6-10 mm. long from a bifid apex.

Inflorescence a loose panicle 7-15 cm. long, the branches ascending to spreading, the pedicles longer than the spikelets;

spikelets 5- to 9-flowered, oblong-lanceolate, flattened, 13-20 mm. long; first glume 5-7 mm. long, 3-nerved, the second slightly longer, 7-nerved;

lemmas 9-10 mm. long with awns 4-10 mm. long from a bifid apex;

paleas 1-2 mm. shorter.