HYDROCHARITACEAE
Najas guadalupensis var. guadalupensis (Sprengel) Magnus
(common waternymph)

Roberts Island, San Joaquin Co.
Coll. Herbert L. Mason & Verne Grant
September 12, 1946
Mason #100010
UCMP-SFES #18

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Morphology, Distribution, and Habitat (After Mason, 1957 and Hickman, 1993)

The seed is ellipsoid, dull but distinctly reticulate. The plant is found in pools, irrigation ditches, reservoirs, and rice fields. It is distributed in Sacramento and San Joaquin valleys, near the coast from San Luis Obispo County north to San Francisco, and southern California in Orange and San Bernardino counties.