Taxon Report

Heuchera caespitosa Eastw.

urn-flowered alumroot

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Taxon Summary

Heuchera caespitosa, commonly known as urn-flowered alumroot, is a perennial rhizomatous herb in the Saxifragaceae that is found only in California. It occurs within Cismontane woodland, Lower montane coniferous forest, Riparian forest (montane), and Upper montane coniferous forest, growing at elevations from 1155 to 2650 meters. Heuchera caespitosa is ranked 4.3, Plants of Limited Distribution, A Watch List; Not very threatened in California.

Classification


Scientific Name:	Heuchera caespitosa Eastw.
Common Name:	urn-flowered alumroot
Family:	Saxifragaceae
Element Code:	PDSAX0E1C0
USDA Plants Symbol:	HECA36
Synonyms/Other Names:	Heuchera elegans

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: May-Aug	May-Aug
Elevation:	1155-2650 (3790-8695)
General Habitats:	Cismontane woodland, Lower montane coniferous forest, Riparian forest, Upper montane coniferous forest
Microhabitat:	Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.3
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	SB_CalBG/RSABG; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: True
California Counties and Islands: Name (Code)
Kern (KRN), Los Angeles (LAX), Mariposa (MPA), San Bernardino (SBD), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Acton (3411842), Alamo Mountain (3411868), Azusa (3411728), Big Pine Mtn. (3411966), Chilao Flat (3411831), Cobblestone Mtn. (3411857), Condor Peak (3411832), Crystal Lake (3411737), Cucamonga Peak (3411725), Eagle Rest Peak (3411982), El Capitan (3711966), Harrison Mtn. (3411722), Keller Peak (3411721), Lion Canyon (3411952), Madulce Peak (3411965), Moonridge (3411627), Mount San Antonio (3411736), Mt. Baldy (3411726), Mt. Wilson (3411821), Pacifico Mountain (3411841), Sawmill Mountain (3411972), Sunland (3411833), Telegraph Peak (3411735), Waterman Mtn. (3411738), White Ledge Peak (3411944)

Threat List Data from the CNDDB


Threat List Total:	0
EOs with Threat Listed:	Total EOs	% of EOs
	0	0 %

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 19 February 2025].