familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Eucycla
speciesEriogonum microtheca
Difference between revisions of "Eriogonum microtheca var. ambiguum"
in P. A. Munz, Suppl. Calif. Fl., 61. 1968.
Common names: Yellow-flowered wild buckwheat
Endemic
Basionym: Eriogonum aureum var. ambiguum M. E. Jones Proc. Calif. Acad. Sci., ser. 2, 5: 719. 1895
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{{Treatment/ID | {{Treatment/ID | ||
| − | |accepted_name=Eriogonum | + | |accepted_name=Eriogonum microtheca var. ambiguum |
|accepted_authority=(M. E. Jones) Reveal | |accepted_authority=(M. E. Jones) Reveal | ||
|publications={{Treatment/Publication | |publications={{Treatment/Publication | ||
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}} | }} | ||
|synonyms= | |synonyms= | ||
| − | |hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum | + | |hierarchy=Polygonaceae;Polygonaceae subfam. Eriogonoideae;Eriogonum;Eriogonum subg. Eucycla;Eriogonum microtheca;Eriogonum microtheca var. ambiguum |
| − | |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. ambiguum]]</div></div> |
|volume=Volume 5 | |volume=Volume 5 | ||
|mention_page=page 243 | |mention_page=page 243 | ||
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|elevation=(1100-)1900-3300 m | |elevation=(1100-)1900-3300 m | ||
|distribution=Calif.;Idaho;Nev.;Oreg. | |distribution=Calif.;Idaho;Nev.;Oreg. | ||
| − | |discussion=<p>Variety ambiguum occurs in eastern California, northwestern | + | |discussion=<p>Variety <i>ambiguum</i> occurs in eastern California, northwestern Nevada, and southeastern Oregon. In portions of its range, var. <i>ambiguum</i> appears to be little more than a yellow-flowered phase of var. <i>laxiflorum</i>. However, where the two occur together, intermediates are rarely found, and limited garden studies indicate that flower color is genetically fixed. Nonflowering specimens from southern Owyhee County, Idaho, have been tentatively assigned to this taxon.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
| − | name=Eriogonum | + | name=Eriogonum microtheca var. ambiguum |
|authority=(M. E. Jones) Reveal | |authority=(M. E. Jones) Reveal | ||
|rank=variety | |rank=variety | ||
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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. ambiguum |
}}<!-- | }}<!-- | ||
| − | -->[[Category:Treatment]][[Category:Eriogonum | + | -->[[Category:Treatment]][[Category:Eriogonum microtheca]] |
Latest revision as of 20:12, 27 October 2022
Subshrubs or shrubs, 0.5–5 × 1–8 dm. Stems: caudex absent; aerial flowering stems 0.2–1 dm, mostly floccose. Leaves: blade 0.8–2.5 × (0.2–)0.3–0.6(–0.8) cm, densely white- or reddish-brown-tomentose abaxially, floccose adaxially, margins rarely revolute. Inflorescences 1–5(–12) cm; branches tomentose to floccose. Involucres 2–2.5 mm, tomentose to floccose. Flowers (1.5–)2–2.5(–3) mm; perianth yellow. Achenes 1.5–2 mm.
Phenology: Flowering Jul–Sep.
Habitat: Sandy to rocky soil, sagebrush and saltbush communities, pinyon-juniper and conifer woodlands
Elevation: (1100-)1900-3300 m
Distribution
Calif., Idaho, Nev., Oreg.
Discussion
Variety ambiguum occurs in eastern California, northwestern Nevada, and southeastern Oregon. In portions of its range, var. ambiguum appears to be little more than a yellow-flowered phase of var. laxiflorum. However, where the two occur together, intermediates are rarely found, and limited garden studies indicate that flower color is genetically fixed. Nonflowering specimens from southern Owyhee County, Idaho, have been tentatively assigned to this taxon.
Selected References
None.
Lower Taxa
None.