Calflora
Taxon  Report   13448    
Aphyllon validum  Jeps.  ssp. howellii  Heckard & L. T. Collins
Howell's broomrape
Aphyllon validum ssp. howellii
© 1997 Dean Wm. Taylor
Photos from
CalPhotos / Calflora
Aphyllon validum ssp. howellii
© 2011 Jake Ruygt
Aphyllon validum ssp. howellii, a dicot, is a perennial herb (parasitic) that is native to California, is endemic (limited) to California.
CNPS Rare Plant Rank: 4.3 (limited distribution).   8th Edition

Interactive Distribution Map


Observation Hotline
(observation details)



point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations
Aphyllon validum ssp. howellii
© 2013 Jake Ruygt
Family: OROBANCHACEAE  
Genus: Aphyllon
Parent: Aphyllon validum
Communities: Chaparral

Serpentine affinity: 3.4; (strong indicator)

Name Status:
Accepted by JEF

Alternate Names:
ICPN: Orobanche valida ssp. howellii
More information about  Aphyllon validum ssp. howellii
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

Search efloras.org (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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: Jan 15, 2019).