Helianthella californica subsp. shastensis
Phytologia 85: 20. 1999.
Stems not branched. Cauline leaves mostly alternate; blades usually linear to lance-linear, sometimes lance-ovate, 3–6 mm(–18+) wide. Heads borne singly. Cypselae winged; pappi of 2 ± subulate scales plus 0–4 shorter scales.
Phenology: Flowering May–Jun.
Habitat: Pine forests, scrublands
Elevation: 1300–2500 m
Subspecies shastensis grows in Shasta, Siskiyou, and Trinity counties.