Heterotheca sessiliflora ssp. bolanderi (A. Gray) Semple is the northern most member of the California Goldenaster complex. It includes just var. bolanderi. It occupies dunes and headlands near the Pacific in northern California. It has been treated as a species in both Chrysospsis and Heterotheca. The taxon is diploid (2n=18).
Nesom (1997) treated the taxon as Het. echioides (Benth.) Shinners var. bolanderi (A.Gray) G.L. Nesom .
1-4. Heterotheca sessilifolia ssp. bolanderi. 1-3. Semple & Heard 8540, Mendecino Co.,California. 1. Dune habitat. 2. Robust plant. 3. Inflorescence. 4. Figure 19 (Semple (1996).
Last revised 2 May 2025 by J.C. Semple
© 2025 J.C. Semple, including all photographs unless otherwise indicated