Ranunculus aquatilis var. aquatilis
Illustrated
Synonyms: Ranunculus aquatilis var. hispidulus (Drew) W. B. Drew Ranunculus trichophyllus var. hispidulus
Treatment appears in FNA Volume 3.
Leaves of 2 types: laminate and filiform-dissected. Achenes 1.6-2 × 1-1.4 mm; beak 0.1-0.4 mm. 2n = 48 (Europe).
Phenology: Flowering spring–summer (Apr–Sep).
Habitat: Marshes, ditches, streams, ponds, and lakes
Elevation: 0-2500 m
Distribution
B.C., N.W.T., Alaska, Calif., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo., South America, Eurasia.
Discussion
Plants growing in deep water may flower without producing floating leaves. Such plants cannot be distinguished from specimens of Ranunculus aquatilis var. diffusus except by culture in shallow water.
Selected References
None.
Lower Taxa
None.