Taxon Report

Claytonia megarhiza (Gray) Wats.

fell-fields claytonia

Print Report

Classification


Scientific Name:	Claytonia megarhiza (Gray) Wats.
Common Name:	fell-fields claytonia
Family:	Montiaceae
Element Code:	PDPOR030A0
USDA Plants Symbol:	CLME
Synonyms/Other Names:	Claytonia bellidifolia Rydb.

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jul-Sep	Jul-Sep
Elevation:	2600-3532 (8530-11590)
General Habitats:	Alpine boulder and rock field, Subalpine coniferous forest
Microhabitat:
Microhabitat Details:	In crevices between rocks

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	24
Element Occurrence Ranks:
Excellent (A)	3
Good (B)	2
Fair (C)	0
Poor (D)	1
None (X)	0
Unknown (U)	18

Location


California Endemic: False
California Counties and Islands: Name (Code)
Alpine (ALP), El Dorado (ELD), Fresno (FRE), Madera (MAD), Mariposa (MPA), Modoc (MOD), Mono (MNO), Nevada (NEV), Placer (PLA), Tuolumne (TUO)
Quads: Name (Quad Code)
Bloody Mtn. (3711858), Caples Lake (3812061), Convict Lake (3711857), Dunderberg Peak (3811913), Eagle Peak (4112032), Ebbetts Pass (3811957), Emerald Bay (3812081), Emerson Peak (4112022), Falls Ridge (3711984), Granite Chief (3912023), Graveyard Peak (3711848), Independence Lake (3912043), Matterhorn Peak (3811914), Mt. Lyell (3711963), Mt. Ritter (3711962), Piute Mtn. (3811915), Rockbound Valley (3812082), Tenaya Lake (3711974), Tower Peak (3811925), Vogelsang Peak (3711973), Yosemite Falls (3711975)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	4	17 %
Foot traffic/trampling	3	12%
Grazing	1	4%
Recreational use (non-ORV)	1	4%
Erosion/runoff	1	4%

Notes



Threatened by foot traffic.
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 4 January 2025].