[Wikipedia] Taxonomy: The genus was erected by Thomas Nuttall in 1842. It is placed in the small subfamily Nemacladoideae of the family Campanulaceae. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
public and private institutions and individuals.
[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 05/14/2025).
