[The Buttercup Family in Denali National Park and Preserve]

Threadleaf Crowfoot, Water Buttercup, White Water Buttercup, White Water Crowfoot

Ranunculus aquatilis var. diffusus

Synonyms: Batrachium circinatum subsp. subrigidum, Batrachium flaccidum, Batrachium longirostris, Batrachium trichophyllum, Batrachium trichophyllum subsp. lutulentum, Ranunculus aquatilis var. calvescens, Ranunculus aquatilis var. capillaceus, Ranunculus aquatilis var. eradicatus, Ranunculus aquatilis var. harrisii, Ranunculus aquatilis var. longirostris, Ranunculus aquatilis var. porteri, Ranunculus aquatilis var. subrigidus, Ranunuculus circinatus var. subrigidus, Ranunculus confervoides, Ranunculus longirostris, Ranunculus subrigidus, Ranunculus trichophyllus, Ranunculus trichophyllus var. calvescens, Ranunculus trichophllus var. eradicatus, Ranunculus trichophyllus subsp. lutulentus

Water Buttercup, White Water Buttercup, White Water Crowfoot: Ranunculus aquatilis var. diffusus (Synonyms: Ranunculus aquatilis var. caespitosus, Ranunculus aquatilis var. capillaceus, Ranunclus aquatilis var. porteri, Ranunculus aquatilis var. subrigidus, Ranunculus aquatilis var. trichophyllus, Ranunculus longirostris, Ranunculus subrigidus, Ranunculus trichophyllus, Ranunculus trichophyllus var. trichophyllus)

White water buttercup (variety diffusus) as seen in a vernal stream at the wildlife viewing area in Logan Valley, Malheur National Forest..............June 26, 2011. Note that all the leaves are similar (filiform).

Water Buttercup, White Water Buttercup, White Water Crowfoot: Ranunculus aquatilis var. diffusus (Synonyms: Ranunculus aquatilis var. caespitosus, Ranunculus aquatilis var. capillaceus, Ranunclus aquatilis var. porteri, Ranunculus aquatilis var. subrigidus, Ranunculus aquatilis var. trichophyllus, Ranunculus longirostris, Ranunculus subrigidus, Ranunculus trichophyllus, Ranunculus trichophyllus var. trichophyllus)

White water buttercup (var. diffusus) as seen in drying muds of a stream passing through Summit Prairie, Malheur National Forest..............August 20, 2011.
Paul Slichter