Flora of North America species comparison

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Ivesia arizonica var. saxosa
Photo is of parent taxon

rock purpusia, rock whitefeather
Inflorescences

(1–)5–30(–150)-flowered, (0.5–)2–14 cm diam.
Flowers

hypanthium turbinate, ± 2 times as deep as wide;

petals white;

anthers 1–1.5 mm.

Ivesia arizonica var. saxosa
Phenology Flowering summer.
Habitat Dry, rocky outcrops of mainly volcanic origin, usually in crevices of more or less vertical protected cliffs or boulders, in sagebrush communities, pinyon-juniper woodlands
Elevation 1500–2100 m (4900–6900 ft)
Distribution
from FNA
NV
[BONAP county map]
Discussion

Of conservation concern.

Variety saxosa is known from scattered locations in the North and South Pahroc ranges, Lincoln County, and on Pahute Mesa, Nye County, Nevada. Reports of this variety in the Sheep Range of Clark County, Nevada (N. H. Holmgren 1997b; T. L. Ackerman et al. 2003), are probably based on var. arizonica.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 9, p. 226.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Ivesia > sect. Setosae > Ivesia arizonica
Sibling taxa
I. arizonica var. arizonica
Synonyms Purpusia saxosa, Potentilla osterhoutii var. saxosa
Name authority (Brandegee) Ertter: Syst. Bot. 14: 233. (1989)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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