Senecio linearifolius var. linearifolius

Linear-leaved australian fireweed, Linear-Leaved Australian Fireweed

Family: Asteraceae · Type: shrub · Not Native

Conservation status: Cal-IPC Yes

Linear-leaved australian fireweed is a naturalized shrub found in the Peninsular Ranges in seasonal wetlands, sandy soils, and disturbed areas at elevations of 50 to 100 meters. Flowering from May to October, this plant produces yellow ray flowers 3 to 6 millimeters long in radiate heads clustered in flat-topped groups. Growing with multiple ascending stems 60 to 180 centimeters tall that are woody at the base and initially cobwebby, it develops glabrous stems over time. Its leaves are narrowly oblanceolate or linear-oblong, 2 to 7 centimeters long and 1 to 4 millimeters wide, often with triangular basal lobes and margins rolled under. The plant forms clusters of 10 to 50 flower heads with 13 phyllaries featuring dark green tips.

Habitat: Seasonal wetland, sandy soils, drainage areas, disturbed areas

Bloom period: May-Oct

Elevation: 50-100 m

Bioregions: PR

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