Taxon Details

Erigeron uncialis var. uncialis

limestone daisy

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Photo of Erigeron uncialis var. uncialis

Taxon Summary:

Erigeron uncialis var. uncialis, commonly known as limestone daisy, is a perennial herb in the Asteraceae that is found in California and elsewhere. It occurs within Great Basin scrub, Pinyon and juniper woodland, and Subalpine coniferous forest, growing at elevations from 1900 to 2900 meters. Erigeron uncialis var. uncialis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Erigeron uncialis Blake var. uncialis
Common Name: limestone daisy
Family:	Asteraceae
Element Code:	PDASTE1081
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G3?T2
State Rank:	S2
Other Status:	BLM_S; USFS_S
CRPR Changes: changed from 2.2 to 1B.2 on 2006-10-11
Add Date:	1984-01-01
Date Edited:	2024-11-05

Ecology and Life History

Lifeform: perennial herb

Blooming Period: May-Jul

Elevation:
1900 - 2900 meters
6235 - 9515 feet

General Habitats:

Great Basin scrub
Pinyon and juniper woodland
Subalpine coniferous forest

Microhabitat Details: Crevices of limestone cliffs.

Microhabitat:

Carbonate

Notes

Notes: Known from fewer than 10 occurrences in Inyo and San Bernardino Counties. Possibly threatened by mining. See SIDA 21(1):19-39 (2004) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	1	13 %
Mining	1	12%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					8
A	B	C	D	X	U
3	0	0	0	0	5

Occurrence Status:
Historical >20 Years	8
Recent <=20 Years	0

Presence:
Presumed Extant	8
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Nevada (NV)

California Counties and Islands: Name (Code)
Inyo (INY), San Bernardino (SBD)

Quads: Name (Quad Code)
Cerro Gordo Peak (3611757), Clark Mtn. (3511555), Crooked Creek (3711841), Mazourka Peak (3611881), Telescope Peak (3611721), Tin Mountain (3611784)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory