Ranunculus longirostris

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

Ranunculus longirostris
Scientific classification Edit this 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. USDA, NRCS (n.d.). "Ranunculus longirostris". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. 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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