Ivesia paniculata

Ash creek ivesia, Ash Creek Ivesia

Family: Rosaceae · Type: perennial · Native

Conservation status: CNPS 1B.2

Ash creek ivesia is a rare (CNPS 1B.2) California native perennial found in the Ash Valley and northern-central Lassen County in shallow, rocky sagebrush areas at elevations of 1,400 to 1,800 meters. Flowering from May to July, this plant produces white to pale yellow flowers in loose clusters 10 to 20 millimeters wide, with delicate blossoms 4 to 6 millimeters across. Growing with prostrate stems 5 to 15 centimeters long, it forms a matted, gray-green plant with a much-branched caudex. Its finely divided leaves have 8 to 15 leaflets on each side, with tiny obovate lobes less than 2 millimeters long, and dense strigose sheath bases. The fruit is small, smooth, and brown, measuring 1 to 1.5 millimeters in length.

Habitat: Shallow, rocky soil, open sagebrush

Bloom period: May-Jul

Elevation: 1400-1800 m

Bioregions: MP (Ash Valley, n-c Lassen Co.).

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.