Species Details

Xylorhiza cognata

Mecca-aster

Download Report Calflora eFlora CCH CalPhotos

Classification

Scientific Name: Xylorhiza cognata (Hall) T.J. Watson
Common Name: Mecca-aster
Family:	Asteraceae
Element Code:	PDASTA1010
USDA Plants Symbol:	XYCO2
Synonyms/Other Names: Machaeranthera cognata

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_CalBG/RSABG
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: perennial herb

Blooming Period: Jan-Jun

Elevation:
20 - 400 meters
65 - 1310 feet

General Habitats:

Sonoran desert scrub

Microhabitat Details:

Microhabitat:

Notes

Notes: Known mostly from Indio Hills and Mecca Hills. Threatened by vehicles. Potentially threatened by development. Possibly threatened by recreational activities and vehicles. See Brittonia 29:199-216 (1977) for revised nomenclature and description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	8
	Total EOs	% of EOs
EOs with Threat Listed:	25	69 %
ORV activity	19	52%
Road/trail construction/maint.	4	11%
Erosion/runoff	3	8%
Vandalism/dumping/litter	2	5%
Development	2	5%
Recreational use (non-ORV)	2	5%
Mining	1	2%
Other	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					36
A	B	C	D	X	U
0	6	11	0	0	19

Occurrence Status:
Historical >20 Years	7
Recent <=20 Years	29

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)
Riverside (RIV)

Quads: Name (Quad Code)
Mecca (3311651), Mortmar (3311558), Myoma (3311673), Palm Springs (3311675), Thermal Canyon (3311661), West Berdoo Canyon (3311672)

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

Click on quad for name. Hold Shift Key to use mouse scroll wheel

CNPS Rare Plant Inventory