Difference between revisions of "Achnatherum wallowaense"
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|distribution=Oreg. | |distribution=Oreg. | ||
| − | |discussion=<p>Achnatherum wallowaense grows in shallow, rocky soil at scattered localities, from 1000-1600 m, in the Wallowa and Ochoco mountains, Oregon.</p> | + | |discussion=<p><i>Achnatherum wallowaense</i> grows in shallow, rocky soil at scattered localities, from 1000-1600 m, in the Wallowa and Ochoco mountains, Oregon.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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name=Achnatherum wallowaense | name=Achnatherum wallowaense | ||
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|authority=J.R. Maze & K.A. Robson | |authority=J.R. Maze & K.A. Robson | ||
|rank=species | |rank=species | ||
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|family=Poaceae | |family=Poaceae | ||
|illustrator=Cindy Roché | |illustrator=Cindy Roché | ||
| + | |illustration copyright=Utah State University | ||
|distribution=Oreg. | |distribution=Oreg. | ||
|reference=None | |reference=None | ||
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|publication year= | |publication year= | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V24/V24_185.xml |
|subfamily=Poaceae subfam. Pooideae | |subfamily=Poaceae subfam. Pooideae | ||
|tribe=Poaceae tribe Stipeae | |tribe=Poaceae tribe Stipeae | ||
Revision as of 20:18, 16 December 2019
Plants tightly cespitose, not rhizomatous. Culms (10)15-40 (45) cm tall, 0.5-0.7 mm thick, glabrous; nodes 1-2. Basal sheaths becoming flat with age, glabrous; collars glabrous, including the sides; basal ligules 0.8-1.3 mm, membranous, truncate to broadly acute, glabrous; upper ligules to 1.6 mm; blades tightly valvate to involute, 0.5-0.8 mm in diameter, abaxial surfaces scabridulous, adaxial surfaces hairy, sometimes densely hairy, hairs shorter than 0.05 mm. Panicles (4)5-13(15) cm long, to 10 cm wide, lax; branches divergent, flexuous, longest branches 2-10 cm, with spikelets confined to the distal portions, drooping. Glumes obtuse to acute; lower glumes 3.5-7 mm long, 0.8-1.3 mm wide, 5(7)-veined; upper glumes 3-6.5 mm, 3-veined; florets 3-5.5 mm long, 1-1.5 mm thick, fusiform, terete; calluses 0.1-0.2 mm, blunt; lemmas coriaceous, shiny, glabrous, black to dark brown at maturity, margins overlapping at maturity, apices thickened dorsally; awns 5-11 mm, readily deciduous, not or weakly geniculate, scabrous; paleas 2.8-4.5 mm, similar to the lemmas in texture, glabrous; anthers 1.6-1.8 mm, dehiscent, not penicillate. Caryopses 2-4 mm, ovoid. 2n = unknown.
Discussion
Achnatherum wallowaense grows in shallow, rocky soil at scattered localities, from 1000-1600 m, in the Wallowa and Ochoco mountains, Oregon.
Selected References
None.