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FNA | Family List | FNA Vol. 20 | Asteraceae | Heterotheca

3a. Heterotheca oregona (Nuttall) Shinners var. oregona

Stems openly branched distally, sparsely to moderately hispid, moderately to densely, finely stipitate-glandular. Leaves green, mid cauline averaging 32.8 × 8.8 mm (15–58 × 3.4–14.8 mm), faces glabrate to sparsely hispid (fewer than 5 hairs/mm²), sparsely to moderately stipitate-glandular. Outer phyllaries lanceolate. 2n = 18.

Flowering Jul–Oct. Sand and gravel deposits, stream margins, in oak and conifer woods; 0–500 m; Calif., Oreg., Wash.

Variety oregona ranges from the Olympic Peninsula in Washington southward through the Cascades and the Coastal ranges to San Luis Obispo County, California.


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