Thelypodium milleflorum

Many-flowered thelypodium

Family: Brassicaceae · Type: biennial · Native

Conservation status: CNPS 2B.2

Many-flowered thelypodium is a rare (CNPS 2B.2) California native biennial found in the Great Basin in sandy scrub habitats at elevations of 1,300 to 2,500 meters. Flowering from April to August, this plant produces white flowers in dense, spike-like inflorescences with oblanceolate petals 9 to 15 millimeters long. Growing 4.5 to 13 decimeters tall with a hollow stem, it develops a distinctive branching structure with glabrous stems except for ciliate petioles. Its basal leaves are 6 to 23 centimeters long with dentate edges, transitioning from petioled basal leaves to mid-cauline leaves with similar tooth-like lobing. The plant produces elongated cylindric fruits 3 to 8 centimeters long, with 50 to 78 small oblong seeds nestled within.

Habitat: Sandy soils, scrub

Bloom period: Apr-Aug

Elevation: 1300-2500 m

Bioregions: GB

California counties: Lassen, Modoc, Mono

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