[Wikipedia] Range: Wolffia columbiana, the Columbian watermeal,[4] is a perennial aquatic plant in the subfamily Lemnoideae. This plant is distributed widely throughout North, Central, and South America, and also occurs in Curaçao.[3] (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: 03/29/2025).
