Taxon  Report   4100    
Hemizonia pungens  (Hook. & Arn.) Torr. & A. Gray  ssp. septentrionalis  D. D. Keck  
(no longer an active name)
Common tarweed,  Northern spikeweed
Hemizonia pungens ssp. septentrionalis, a dicot, is an annual herb that is native to California, and is endemic (limited) to California.
Genus: Hemizonia
Parent: Hemizonia pungens
Communities: wetland-riparian
Name Status:
Accepted in JM93

JEF other name:
Centromadia pungens ssp. pungens

PLANTS other name:
Centromadia pungens ssp. septentrionalis

NOTE: Hemizonia pungens ssp. septentrionalis is no longer an active name.
More information about  Hemizonia pungens ssp. septentrionalis
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]. 2020. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Apr 09, 2020).