Difference between revisions of "Achnatherum parishii subsp. parishii"

Common names: Parish's needlegrass
Synonyms: Stipa coronata subsp. parishii
Treatment appears in FNA Volume 24. Treatment on page 129.
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|accepted_name=Achnatherum parishii subsp. parishii
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|name=Stipa coronata subsp. parishii
 
|name=Stipa coronata subsp. parishii
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name=Achnatherum parishii subsp. parishii
 
name=Achnatherum parishii subsp. parishii
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Revision as of 20:49, 5 November 2020

Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Culms 20-80 cm tall, 1.5-2 mm thick, mostly glabrous, pubescent below the nodes. Basal sheath margins hairy distaily. hairs 1-3.2 mm; blades 11-30+ cm long, 2.5-4.2 mm wide, usually flat or only partly closed, sometimes completely convolute, straight to somewhat arcuate distaily. Panicles 11-15 cm long, 2-4 cm wide. Florets 5.5-6.5 mm; awns 15-35 mm; paleas sparsely hairy between the veins, hairs about 1/2 as long as the lemma hairs, apices usually rounded, occasionally somewhat pinched; anthers 3.5-4.5 mm, glabrous. Caryopses 5-6 mm, fusiform. 2n = unknown.

Discussion

Achnatherum parishii subsp. parishii grows on dry, rocky slopes, in desert shrub and pinyon-juniper associations, from the coastal ranges of California to northeastern Nevada, eastern Utah, and the Grand Canyon in Arizona. Its range extends into Baja California, Mexico. It differs from A. coronatum in its shorter culms and once-geniculate awns, and from subsp. depauperatum in its longer culms, hairy sheath margins, and sparsely hairy paleas.

Selected References

None.

Lower Taxa

None.