Ivesia arizonica var. arizonica

unknown
Synonyms: Potentilla osterhoutii (A. Nelson) J. T. HowellPurpusia osterhoutii A. Nelson
Treatment appears in FNA Volume 9. Treatment on page 225. Mentioned on page 226.
Revision as of 00:08, 27 July 2019 by FNA>Volume Importer
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Inflorescences 1–20(–60)-flowered, 0.5–7 cm diam. Flowers: hypanthium campanulate, ± as deep as wide; petals yellow; anthers 0.6–1 mm.


Phenology: Flowering summer.
Habitat: Dry, rocky outcrops of calcareous or volcanic origin, usually in crevices of more or less vertical protected cliffs or large boulders, in sagebrush communities, conifer woodlands
Elevation: 1200–2400(–3400) m

Distribution

V9 336-distribution-map.jpg

Ariz., Calif., Nev., Utah.

Discussion

Of conservation concern.

Variety arizonica occurs as isolated populations from the Funeral and Grapevine mountains, Inyo County, California, to the Kolob Plateau of Washington County, Utah, and on the walls of the Grand Canyon and in the Oak Creek Canyon area of northern Arizona. Significant variation in vestiture, hypanthium depth, and other features occurs among these widely scattered population clusters. High-elevation plants (3100–3400 m) from the Troy Peak area of the Grant Range in northeastern Nye County, Nevada, are notably depauperate (0.2–0.5 dm) with leaflets 2–5 mm and petals 1.6–2.5 mm. All other populations occur below 2400 m.

Selected References

None.

Lower Taxa

None.
Barbara Ertter +  and James L. Reveal +
unknown +
Purpusia arizonica +
Ariz. +, Calif. +, Nev. +  and Utah. +
1200–2400(–3400) m +
Dry, rocky outcrops of calcareous or volcanic origin, usually in crevices of more or less vertical protected cliffs or large boulders, in sagebrush communities, conifer woodlands +
Flowering summer. +
Conservation concern +, Endemic +  and Illustrated +
Potentilla osterhoutii +  and Purpusia osterhoutii +
Ivesia arizonica var. arizonica +
Ivesia arizonica +
variety +