Oregon Goldenaster

Heterotheca oregona (Nutt.) Shinners is a rayless species native to Cascade Mts. and Coastal Ranges from Washington south to central California.  The species is diploid (2n=18).  See Semple (2006 FNA).

Heteotheca oregona morphology after Semple et al 1988

Four varieties were recognized by Semple et al (1988) and Semple (2006):

  • var. compacta (D.D. Keck) Semple
  • var. oregona
  • var. rudis (Greene) Semple
  • var. scaberrima (A. Gray) Semple