Taxon  Report   13016 
Castilleja ambigua  (Hook. & Arn.) T.I. Chuang & Heckard  var. humboldtiensis  (D.D. Keck) J.M. Egger
Humboldt bay owl's-clover
Castilleja ambigua var. humboldtiensis
© 2005 Doreen L. Smith
More photos from
CalPhotos / Calflora
Castilleja ambigua var. humboldtiensis
© 2000 Doreen L. Smith
Castilleja ambigua var. humboldtiensis
© 1995 Saint Mary's College of California
Castilleja ambigua var. humboldtiensis, a dicot, is an annual herb that is native to California and is endemic (limited) to California.
CNPS Rare Plant Rank: 1B.2 (rare, threatened, or endangered in CA and elsewhere).   8th Edition

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Plant Characteristics
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Castilleja ambigua var. humboldtiensis
© 2002 California Native Plant Society
Genus: Castilleja
Parent Record Castilleja ambigua
Coastal Salt Marsh, wetland-riparian
Habitat: salt-marsh, coastal
Wetlands: Occurs usually in wetlands, occasionally in non wetlands
Distribution by County 

Add an Observation of  Castilleja ambigua var. humboldtiensis

Name Status:
Accepted by CNPS
Alternate Names:
(according to)

CNPS: Castilleja ambigua ssp. humboldtiensis
More information about  Castilleja ambigua var. humboldtiensis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Records from the Consortium of California Herbaria

Search (Flora of North America)

website references from Google

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]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Jun 25, 2018).

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