Species Details

Arctostaphylos rudis

sand mesa manzanita

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Classification

Scientific Name: Arctostaphylos rudis Jeps. & Wies.
Common Name: sand mesa manzanita
Family:	Ericaceae
Element Code:	PDERI041E0
USDA Plants Symbol:	ARRU2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.2
Fed List:	None
State List:	None
Global Rank:	G2
State Rank:	S2
Other Status:	BLM_S; SB_SBBG
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-08-25

Ecology and Life History

Lifeform: perennial evergreen shrub

Blooming Period: Nov-Feb

Elevation:
25 - 322 meters
80 - 1055 feet

General Habitats:

Chaparral (maritime)
Coastal scrub

Microhabitat Details:

Microhabitat:

Sandy

Notes

Notes: Severely reduced on Nipomo Mesa; more widespread on Burton Mesa. Threatened by agriculture, road construction, road maintenance, and oil extraction. Possibly threatened by development. See Erythea 8:100 (1938) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	10
	Total EOs	% of EOs
EOs with Threat Listed:	19	53 %
Development	15	41%
Non-native plant impacts	5	13%
Road/trail construction/maint.	5	13%
Wood cutting or brush clearing	4	11%
Other	3	8%
Improper burning regime	3	8%
Agriculture	2	5%
Disking	1	2%
Grazing	1	2%
Vandalism/dumping/litter	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					36
A	B	C	D	X	U
4	7	4	4	0	17

Occurrence Status:
Historical >20 Years	24
Recent <=20 Years	12

Presence:
Presumed Extant	36
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
San Luis Obispo (SLO), Santa Barbara (SBA)

Quads: Name (Quad Code)
Arroyo Grande NE (3512025), Casmalia (3412075), Guadalupe (3412085), Lompoc (3412064), Lompoc Hills (3412054), Los Alamos (3412063), Nipomo (3512014), Oceano (3512015), Orcutt (3412074), Pismo Beach (3512026), Point Arguello (3412056), Point Sal (3412086), Sisquoc (3412073), Surf (3412065), Tranquillon Mtn. (3412055)

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