Species Details

Arenaria lanuginosa var. saxosa

rock sandwort

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Species Description:

Arenaria lanuginosa var. saxosa, commonly known as rock sandwort, is a perennial herb in the Caryophyllaceae that is found in California and elsewhere. It occurs within Subalpine coniferous forest, and Upper montane coniferous forest, growing at elevations from 1455 to 2600 meters. Arenaria lanuginosa var. saxosa is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification

Scientific Name: Arenaria lanuginosa (Michx.) Rohrb. var. saxosa (A. Gray) Zarucchi et al.
Common Name: rock sandwort
Family:	Caryophyllaceae
Element Code:	PDCAR040E4
USDA Plants Symbol:
Synonyms/Other Names: Arenaria lanuginosa ssp. saxosa
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.3
Fed List:	None
State List:	None
Global Rank:	G5T5
State Rank:	S2
Other Status:	SB_CalBG/RSABG; USFS_S
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2021-08-25

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jul-Aug

Elevation:
1455 - 2600 meters
4775 - 8530 feet

General Habitats:

Subalpine coniferous forest
Upper montane coniferous forest

Microhabitat Details:

Microhabitat:

Mesic
Sandy

Notes

Notes: Possibly threatened by foot traffic. See Smithsonian Contributions to Knowledge 5(6):18 (1853) for original description, and American Midland Naturalist 46(2):498 (1951) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	3
	Total EOs	% of EOs
EOs with Threat Listed:	6	40 %
Foot traffic/trampling	6	40%
Over-collecting/poaching	1	6%
Recreational use (non-ORV)	1	6%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					15
A	B	C	D	X	U
0	0	6	0	0	9

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	13

Presence:
Presumed Extant	15
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Arizona (AZ), Baja California (BA), California (CA), Colorado (CO), New Mexico (NM), Texas (TX), Utah (UT)

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

Quads: Name (Quad Code)
Big Bear Lake (3411628), Forest Falls (3411618), Moonridge (3411627), San Gorgonio Mtn. (3411617)

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