familyPolygonaceae
subfamilyPolygonaceae subfam. Eriogonoideae
genusEriogonum
subgenusEriogonum subg. Eucycla
speciesEriogonum zionis
varietyEriogonum zionis var. zionis
Difference between revisions of "Eriogonum zionis var. zionis"
Common names: Zion wild buckwheat
Synonyms: Eriogonum racemosum var. nobilis unknown
Treatment appears in FNA Volume 5. Treatment on page 297.
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Revision as of 21:09, 24 September 2019
Plants erect to spreading, 3–8(–10) dm. Aerial flowering stems usually fistulose, glabrous or rarely tomentose. Leaf blades oblong-ovate to ovate, 2–4.5 × 1.5–2.5 cm. Inflorescences 20–45(–60) cm. Involucres 1.5–3 mm. Flowers 2–3.5(–4) mm; perianth white to yellow.
Phenology: Flowering Jul–Oct.
Habitat: Deep sandy soil, sagebrush communities, scrub oak, juniper, pinyon, and montane conifer woodlands
Elevation: 1300-2100 m
Discussion
Variety zionis is found in scattered populations in Kane, San Juan, Washington, and Wayne counties, Utah, and in northern Coconino and northeastern Mohave counties, Arizona. It is rare or only locally infrequent. Occasionally, plants with tomentose flowering stems occur with glabrous individuals. The Zion wild buckwheat, with a chromosome number 2n = 40 (J. L. Reveal, unpubl.), is distinct from the related E. racemosum, with 2n = 36, and no intermediates are known.
Selected References
None.
Lower Taxa
None.