Taxon  Report   1674    
Castilleja ambigua  Hook. & Arn.  ssp. humboldtiensis  (D. D. Keck) T. I. Chuang & Heckard
Humboldt bay owl's clover
Castilleja ambigua ssp. humboldtiensis, a dicot, is an annual herb (hemiparasitic) that is native to California, and is endemic (limited) to California.

Bloom Period
Wetlands: Occurs usually in wetlands, occasionally in non wetlands

Habitat: salt-marsh, coastal

Communities: Coastal Salt Marsh, wetland-riparian

Name Status:
Accepted by JEF + PLANTS

CNPS other name:
Castilleja ambigua var. humboldtiensis

Alternate Names:
JEF + PLANTS: Orthocarpus castillejoides var. humboldtiensis
More information about  Castilleja ambigua ssp. humboldtiensis
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jul 17, 2019).