Ageratina shastensis

Shasta ageratina, Shasta ageratina, Shasta ageratina

Family: Asteraceae · Type: perennial · Native

Conservation status: CNPS 1B.2

Shasta ageratina is a rare (CNPS 1B.2) California native perennial herb found in the Klamath Ranges on limestone or metavolcanic cliffs, in chaparral, and in conifer forest at elevations of 400 to 1,800 meters. Flowering from June to October, this plant produces white flowers in heads generally solitary or up to 3, approximately 1.2 centimeters long. Growing with erect or ascending glandular-hairy stems 13 to 45 centimeters tall, it has a woody caudex. Its proximal leaves are opposite while distal leaves are alternate, with blades 15 to 30 millimeters long, approximately deltate-ovate and serrate, somewhat hairy with glandular undersides. The fruit is 3 to 5.5 millimeters long.

Habitat: Limestone or metavolcanic cliffs, chaparral, conifer forest

Bloom period: Jun-Oct

Elevation: 400-1800 m

Bioregions: KR.

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