Calflora, a 501c3 non-profit
Distribution by County   8345    
Wolffia arrhiza  (L.) Wimm.
Spotless watermeal,   Water meal
Wolffia arrhiza is a perennial herb that is native to California.
Record Count by County

San Diego: 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:   (Accessed: 02/24/2024).