Difference between revisions of "Achnatherum parishii subsp. depauperatum"
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Latest revision as of 16:22, 11 May 2021
Culms 14-35 cm tall, 0.8-1.7 mm thick, glabrous. Basal sheath margins glabrous or hairy distaily, hairs to 0.5 mm; blades 4-15 cm long, 1-2.5 mm wide, usually 0.5-1.5 mm in diameter and tightly convolute, conspicuously arcuate distaily, abaxial surfaces smooth, glabrous, adaxial surfaces scabrous. Panicles 7-12 cm long, 1.5-2.5 cm wide. Florets 4.8-6 mm; paleas densely hairy between the veins, some hairs as long as those on the lemmas; awns 10-17 mm; anthers 2.3-2.8 mm. Caryopses 3-4 mm, fusiform. 2n = unknown.
Discussion
Achnatherum parishii subsp. depauperatum grows in gravel and on rocky slopes, in juniper and mixed desert shrub associations, from central Nevada to western Utah. It differs from A. webberi in its persistent awns and thicker leaves that tend to curl when dry, and from A. parishii subsp. parishii in its smaller stature, glabrous or shortly hairy sheath margins, and densely hairy paleas.
Selected References
None.