Calycadenia oppositifolia

Butte county calycadenia, Butte County Calycadenia

Family: Asteraceae · Type: annual · Native

Conservation status: CNPS 4.2

Butte county calycadenia is a native annual herb found in the northern Sierra Nevada Foothill and California Ranges in open, dry meadows and foothill woodland openings at elevations of 50 to 900 meters. Flowering from April to July, this plant produces white to reddish flowers in small clusters, with ray flowers 6 to 9 millimeters long featuring central lobes that are symmetrically shaped. Growing with slender stems 10 to 30 centimeters tall, the plant has a delicate appearance with sparse branching and strigose hairs. Its opposite leaves range from 1 to 5 centimeters long, becoming slightly smaller toward the stem tips. The plant forms congested axillary and terminal flower clusters with distinctive lanceolate bracts and delicate white to reddish ray flowers.

Habitat: Locally common; open, dry meadows, hillsides, openings in foothill woodland

Bloom period: Apr-Jul

Elevation: 50-900 m

Bioregions: CaRF, n SNF.

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