familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Oligogonum
speciesEriogonum arcuatum
Difference between revisions of "Eriogonum arcuatum var. xanthum"
Harvard Pap. Bot. 9: 157. 2004.
Common names: Ivy League wild buckwheat
Endemic
Basionym: Eriogonum xanthum Small Bull. Torrey Bot. Club. 33: 51. 1906
Synonyms: Eriogonum chloranthum Greene Eriogonum flavum subsp. chloranthum (Greene) S. Stokes Eriogonum flavum var. xanthum (Small) S. Stokes Eriogonum jamesii var. xanthum (Small) Reveal
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V5/V5_760.xml |
|subfamily=Polygonaceae subfam. Eriogonoideae | |subfamily=Polygonaceae subfam. Eriogonoideae | ||
|genus=Eriogonum | |genus=Eriogonum | ||
Latest revision as of 22:13, 5 November 2020
Plants compact mats, 3–10 dm wide. Aerial flowering stems 0.2–0.8 dm. Leaf blades oblanceolate to oblong, 1–2.5 × 0.5–1 cm. Inflorescences capitate, often reduced to single involucre; bracts 0.3–1 × 0.2–0.7 cm. Involucres 4–6 × 3–5 mm. Flowers 6–7 mm.
Phenology: Flowering Jul–Sep.
Habitat: Sandy, gravelly to rocky or talus slopes, high-elevation grassland, sagebrush, and tundra communities, alpine conifer woodlands
Elevation: (2600-)3000-4000(-4200) m
Discussion
Variety xanthum is the subalpine to alpine expression of the species and is distributed along the backbone of the Colorado Rocky Mountains on many of the highest peaks (Chaffee, Clear Creek, Custer, El Paso, Fremont, Grand, Hinsdale, Huerfano, Lake, Larimer, Park, Saguache, Summit, and Teller counties). The plants are rather exquisite in the field and do well in cultivation.
Selected References
None.
Lower Taxa
None.
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