Ranunculus longirostris

Ranunculus longirostris, the longbeak buttercup,[1] is an aquatic plant in the buttercup family.

Ranunculus longirostris
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Ranunculaceae
Genus: Ranunculus
Species:
R. longirostris
Binomial name
Ranunculus longirostris
Synonyms[1]
  • Batrachium circinatum (Sibth.) Rchb.
  • Batrachium circinatum (Sibth.) Rchb. ssp. subrigidum (W. Drew) Á. Löve & D. Löve
  • Batrachium longirostre (Godr.) F.W. Schultz
  • Ranunculus amphibius James
  • Ranunculus aquatilis L. var. diffusus With. p.p.[2]
  • Ranunculus aquatilis L. var. longirostris (Godr.) G. Lawson
  • Ranunculus aquatilis L. var. subrigidus (W. Drew) Breitung
  • Ranunculus circinatus auct. non Sibth.
  • Ranunculus circinatus Sibth. var. subrigidus (W. Drew) L.D. Benson
  • Ranunculus subrigidus W. Drew
  • Ranunculus usneoides Greene

This species is native to Canada and the United States, where it is widespread. However, it is absent from most of the Southeastern United States.[3] It is found in a diversity of freshwater aquatic habitats, often in streams with slow moving water.[4]

There has been some difficulty in separating this species from the closely related Ranunculus trichophyllus, due in part to the lack of preservation of critical features on herbarium specimens.[5]

References
  1. "Ranunculus longirostris". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 18 October 2015.
  2. Accepted name for R. longirostris Tropicos.org. Missouri Botanical Garden. 21 Dec 2011
  3. "Ranunculus longirostris". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014. Retrieved 19 January 2017.
  4. "Flora of the Southern and Mid-Atlantic States".
  5. University of Michigan Herbarium


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