UW Burke Herbarium species comparison

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Taeniatherum caput-medusae

medusa-head
Habit Usually puberulent annual, the stems 2-6 dm. tall.
Leaves

Sheaths open;

auricles well-developed;

ligules membranous, 0.5 mm. long;

blades short, 1-1.5 mm. broad, the margins with conspicuous long, stiff hairs.
Flowers

Inflorescence a spike 2-5 cm. long;

spikelets usually 2 per node, crowded, with 1 perfect flower, the rachilla prolonged with a vestige of a second flower;

glumes very narrow, stiff, tapered to a slender awn up to 3 cm. long;

lemmas scabrous, 3-nerved, 5-7 mm. long, with a strong, flattened awn 3-10 cm. long.

Taeniatherum caput-medusae
Flowering time April-June
Habitat Sagebrush desert, fields, roadsides, wastelots, and other disturbed areas.
Distribution
Occurring east of the Cascades crest in Washington; Washington to California, east to the Rocky Mountains; also in eastern North America.
[WildflowerSearch map]
[BONAP county map]
Origin Introduced from Eurasia
Conservation status Not of concern
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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