Difference between revisions of "Eriogonum microtheca var. laxiflorum"
Hooker’s J. Bot. Kew Gard. Misc. 5: 264. 1853.
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GeoffLevin (talk | contribs) (Corrected spelling of specific epithet from "microthecum" to "microtheca".) |
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{{Treatment/ID | {{Treatment/ID | ||
| − | |accepted_name=Eriogonum | + | |accepted_name=Eriogonum microtheca var. laxiflorum |
|accepted_authority=Hooker | |accepted_authority=Hooker | ||
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
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|rank=species | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
| − | |name=Eriogonum | + | |name=Eriogonum microtheca subsp. confertiflorum |
|authority=(Bentham) S. Stokes | |authority=(Bentham) S. Stokes | ||
|rank=subspecies | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
| − | |name=Eriogonum | + | |name=Eriogonum microtheca subsp. laxiflorum |
|authority=(Hooker) S. Stokes | |authority=(Hooker) S. Stokes | ||
|rank=subspecies | |rank=subspecies | ||
}} | }} | ||
| − | |hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum | + | |hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum microtheca;Eriogonum microtheca var. laxiflorum |
| − | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Eriogonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Eriogonum]]</div><div class="higher-taxon"><small>subgenus</small>[[Eriogonum subg. Eucycla]]</div><div class="higher-taxon"><small>species</small>[[Eriogonum | + | |hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Eriogonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Eriogonum]]</div><div class="higher-taxon"><small>subgenus</small>[[Eriogonum subg. Eucycla]]</div><div class="higher-taxon"><small>species</small>[[Eriogonum microtheca]]</div><div class="higher-taxon"><small>variety</small>[[Eriogonum microtheca var. laxiflorum]]</div></div> |
|volume=Volume 5 | |volume=Volume 5 | ||
|mention_page=page 245, 246, 247 | |mention_page=page 245, 246, 247 | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
| − | name=Eriogonum | + | name=Eriogonum microtheca var. laxiflorum |
|authority=Hooker | |authority=Hooker | ||
|rank=variety | |rank=variety | ||
|parent rank=species | |parent rank=species | ||
| − | |synonyms=Eriogonum confertiflorum;Eriogonum | + | |synonyms=Eriogonum confertiflorum;Eriogonum microtheca subsp. confertiflorum;Eriogonum microtheca subsp. laxiflorum |
|basionyms= | |basionyms= | ||
|family=Polygonaceae | |family=Polygonaceae | ||
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|genus=Eriogonum | |genus=Eriogonum | ||
|subgenus=Eriogonum subg. Eucycla | |subgenus=Eriogonum subg. Eucycla | ||
| − | |species=Eriogonum | + | |species=Eriogonum microtheca |
| − | |variety=Eriogonum | + | |variety=Eriogonum microtheca var. laxiflorum |
}}<!-- | }}<!-- | ||
| − | -->[[Category:Treatment]][[Category:Eriogonum | + | -->[[Category:Treatment]][[Category:Eriogonum microtheca]] |
Revision as of 21:11, 27 October 2022
Subshrubs, (1–)2–4(–5) × 3–8 dm. Stems: caudex absent; aerial flowering stems 0.2–0.6(–0.8) dm, floccose or tomentose, rarely glabrous. Leaf blade usually elliptic, (0.5–)1–2(–2.5) × (0.1–)0.2–0.6(–0.8) cm, densely to sparsely whitish-tomentose abaxially, less so to sparsely whitish-floccose adaxially, margins not revolute. Inflorescences (1–)2–4(–8) cm; branches floccose or glabrous. Involucres 2–3(–3.5) mm, subglabrous, glabrous, or merely floccose between angled ridges. Flowers 2–3 mm; perianth white to pink or rose. Achenes 2–3 mm.
Phenology: Flowering Jun–Oct.
Habitat: Sandy to gravelly flats and slopes, mixed grassland, saltbush, blackbrush, and sagebrush communities, pinyon-juniper and montane conifer woodlands
Elevation: (400-)1500-3200 m
Distribution
Ariz., Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.
Discussion
Variety laxiflorum is the common expression of the species in the northern part of the species’ range. It occurs in northern Arizona, eastern California, western Colorado, central and southern Idaho, southwestern Montana, Nevada, eastern Oregon, northern and western Utah, eastern Washington, and southwestern Wyoming. It overlaps morphologically with var. simpsonii in northern Arizona. The variety is the primary host plant for the rare Mattoni blue butterfly (Euphilotes rita mattoni).
Selected References
None.