Triglochin palustris is a perennial herb (aquatic) that is native to California, and also found elsewhere in North America and beyond.
California Rare Plant Rank: 2B.3 (rare, threatened, or endangered in CA; common elsewhere).
[Wikipedia] Etymology, Distribution: The species epithet palustris is Latin for "of the marsh" and indicates its common habitat.[3] It has a circumboreal distribution, occurring throughout northern parts of the Northern Hemisphere. (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).
one or more occurrences