Taxon Report

Ranunculus hydrocharoides Gray

frog's-bit buttercup

Print Report

Classification


Scientific Name:	Ranunculus hydrocharoides Gray
Common Name:	frog's-bit buttercup
Family:	Ranunculaceae
Element Code:	PDRAN0L190
USDA Plants Symbol:	RAHY
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb (aquatic)
Blooming Period: (May)Jun-Sep	(May)Jun-Sep
Elevation:	1100-2700 (3610-8860)
General Habitats:	Marshes and swamps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.1
Global Rank:	G4
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.1 to 2B.1 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	4
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	0
Fair (C)	0
Poor (D)	1
None (X)	1
Unknown (U)	2

Location


California Endemic: False
California Counties and Islands: Name (Code)
Inyo (INY), Mono (MNO)
Quads: Name (Quad Code)
Bishop (3711834), Kearsarge Peak (3611873)*, Lundy (3811912), River Spring (3711885)

Threat List Data from the CNDDB


Threat List Total:	3
EOs with Threat Listed:	Total EOs	% of EOs
	2	50 %
Foot traffic/trampling	1	25%
Grazing	1	25%
Other	1	25%

Notes



Threatened by development, grazing, and hydrological alterations. See Memoirs of the American Academy of Arts and Sciences II 5:306 (1855) for original description, and Madroño 42(4):515-516 (1995) for occurrence information.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 7 January 2025].