Holmgrenanthe petrophila

Rock lady

Family: Plantaginaceae · Type: perennial · Native

Conservation status: CNPS 1B.2

Rock lady is a rare (CNPS 1B.2) California native perennial found in northern Mojave Desert regions including Titus Canyon, Fall Canyon, Death Valley, and Inyo County in limestone crevices of canyons at elevations of 700 to 1,700 meters. Flowering from April to June, this plant produces white to pale yellow flowers with delicate yellow throat folds. Growing with erect to pendulous stems 30 to 45 centimeters tall that become woody at the base and densely branch, it develops a complex glandular-hairy structure. Its leaves are approximately round to kidney-shaped, 12 to 35 millimeters long with irregular bristly teeth and prominent palmate veining. The fruit is nearly spherical, 8 to 10 millimeters long and dehiscent through two to three distinctive pores.

Habitat: Limestone crevices of canyons

Bloom period: Apr-Jun

Elevation: 700-1700 m

Bioregions: n DMoj (Titus, Fall canyons, Death Valley region, Inyo Co.).

California counties: Inyo

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