Taxon  Report   5983    
Orobanche valida  Jeps.  ssp. howellii  Heckard & L. T. Collins
Howell's broomrape
Orobanche valida ssp. howellii
© 1997 Dean Wm. Taylor
Photos from
CalPhotos / Calflora
Orobanche valida ssp. howellii
© 2011 Jake Ruygt
Orobanche valida 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

Bloom Period
Orobanche valida ssp. howellii
© 2013 Jake Ruygt
Genus: Orobanche
Parent: Orobanche valida
Communities: Chaparral

Serpentine affinity: 3.4; (strong indicator)

Name Status:
Accepted by ICPN + CNPS + PLANTS

ICPN accepted name:
Aphyllon validum ssp. howellii

More information about  Orobanche valida 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

ITIS Original Publication citation


Search the International Plants Names Index

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]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 20, 2019).