[Wikipedia] Variation, Similar ssp: Gayophytum ramosissimum is similar to some individuals of G. diffusum subsp. parviflorum and has probably contributed to the extensive variation of the G. diffusum tetraploid complex. Gayophytum ramosissimum is most readily distinguished from G. diffusum subsp. parviflorum by its capsule being shorter than the pedicel. (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]. 2024. Berkeley, California:The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 11/21/2024).