Ivesia rhypara var. shellyi
Ivesia rhypara var. rhypara
Shelly's ivesia, Shelly's mousetail
grimy mousetail
(0.1–)0.2–0.5(–0.9) dm, equal to or exceeding leaves by no more than 2(–7) cm.
(0.3–)0.4–1.5(–2) dm, usually exceeding leaves by more than 2 cm.
5–30(–60)-flowered, 0.5–2(–5) cm diam. 2n = 28.
10–60(–100)-flowered, (1–)2–5(–7) cm diam.
Ivesia rhypara var. shellyi
Ivesia rhypara var. rhypara
Of conservation concern.
In addition to their more overtly petrophytic habit, plants of var. shellyi are generally smaller and more compact than those of var. rhypara. It is known only from the Rehart and Venator canyons area along the border of Harney and Lake counties in southeastern Oregon.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Variety rhypara is known from widely scattered locations in central Malheur and southeastern Lake counties, Oregon, and in northern Washoe, Humboldt, and Elko counties, Nevada. Although not overtly petrophytic, plants are generally associated with crevices in the underlying bedrock (E. M. Clark and W. H. Clark 2003). They might thereby benefit from a more favorable water relationship, allowing them to be in full bloom when most associated species are summer-dormant.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
CalFlora
