Calflora, a 501c3 non-profit
Distribution by County   13448    
Aphyllon validum  Jeps.  ssp. howellii  Heckard & L. T. Collins
Howell's broomrape
Aphyllon validum ssp. howellii is a perennial herb (parasitic) that is native to California, and endemic (limited) to California.
Record Count by County

Colusa: 2 Lake: 9 Napa: 3 Tehama: 2
Glenn: 2 Mendocino: 1 Sonoma: 2

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]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 11/24/2024).