Species Details

Senecio aphanactis

chaparral ragwort

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Classification

Scientific Name: Senecio aphanactis Greene
Common Name: chaparral ragwort
Family:	Asteraceae
Element Code:	PDAST8H060
USDA Plants Symbol:	SEAP2
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G3
State Rank:	S2
Other Status:	SB_CalBG/RSABG; SB_CRES
CRPR Changes: changed from 2.2 to 2B.2 on 2013-06-12
Add Date:	1994-01-01
Date Edited:	2022-06-08

Ecology and Life History

Lifeform: annual herb

Blooming Period: Jan-Apr(May)

Elevation:
15 - 800 meters
50 - 2625 feet

General Habitats:

Chaparral
Cismontane woodland
Coastal scrub

Microhabitat Details:

Microhabitat:

Alkaline (sometimes)

Notes

Notes: Threatened by development. Rare in LAX, ORA, and RIV counties. Need quads for RIV Co. and SCT Isl. Not seen on SCZ Isl. between 1934 and 1991. See Pittonia 1:220 (1888) for original description, and North American Flora II 10:50-139 (1978) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	13
	Total EOs	% of EOs
EOs with Threat Listed:	12	12 %
ORV activity	5	5%
Development	4	4%
Non-native plant impacts	3	3%
Grazing	2	2%
Improper burning regime	1	1%
Military operations	1	1%
Erosion/runoff	1	1%
Feral pigs	1	1%
Foot traffic/trampling	1	1%
Other	1	1%
Recreational use (non-ORV)	1	1%
Road/trail construction/maint.	1	1%
Wood cutting or brush clearing	1	1%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					98
A	B	C	D	X	U
12	6	2	0	5	73

Occurrence Status:
Historical >20 Years	57
Recent <=20 Years	41

Presence:
Presumed Extant	93
Possibly Extirpated	5
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
Baja California (BA), California (CA)

California Counties and Islands: Name (Code)
Alameda (ALA), Contra Costa (CCA), Fresno (FRE), Los Angeles (LAX), Merced (MER), Monterey (MNT), Orange (ORA), Riverside (RIV), San Benito (SBT), San Bernardino (SBD), San Diego (SDG), San Francisco (SFO), San Luis Obispo (SLO), San Mateo (SMT), Santa Barbara (SBA), Santa Clara (SCL), Santa Cruz (SCR), Solano (SOL), Tulare (TUL), Ventura (VEN)

Quads: Name (Quad Code)
Antioch South (3712187), Arroyo Grande NE (3512025), Benicia (3812212), Bickmore Canyon (3612152), Burnett Peak (3512172), Byron Hot Springs (3712176), Camarillo (3411921), Camatta Ranch (3512043), Cambria (3512151), Cerro Colorado (3612068), Chounet Ranch (3612066), Ciervo Mtn. (3612045), Clayton (3712188), Cypress Mountain (3512058), Dana Point (3311746), Davenport (3712212), Del Mar (3211782), El Toro (3311766), Felton (3712211), Fontana (3411714), Glendora (3411727), Imperial Beach (3211751), Jacumba (3211662), Jamul Mountains (3211668), Jolon (3512182), Kreyenhagen Hills (3612013), La Jolla (3211772), La Mesa (3211771), Laguna Seca Ranch (3612077), Las Pulgas Canyon (3311734), Lillis Ranch (3612044), Lompoc (3412064), Lompoc Hills (3412054), Lopez Mtn. (3512035), Mare Island (3812213), Mercey Hot Springs (3612067), Midway (3712165), Mindego Hill (3712232), Monocline Ridge (3612055), Morro Bay North (3512047), Morro Bay South (3512037), National City (3211761), Newark (3712251), Newbury Park (3411828), Newhall (3411845), North Chalone Peak (3612142), Oceanside (3311724), Ortigalita Peak NW (3612088), Otay Mesa (3211658), Panoche (3612057), Panorama Hills (3511926), Pechanga (3311741), Pismo Beach (3512026), Point Conception (3412044), Point Loma (3211762), Port San Luis (3512027), Poway (3211781), Riverside East (3311783), Sacate (3412043), San Bernardino South (3411713), San Clemente (3311745), San Dimas (3411717), San Francisco South (3712264), San Jose East (3712137), San Luis Obispo (3512036), San Mateo (3712253), Santa Catalina East (3311833), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Rosa Island North (3312081), Santa Ynez (3412051), Shedd Canyon (3512054), Success Dam (3611818), Thousand Oaks (3411827), Topo Valley (3612141), Tranquillon Mtn. (3412055), Triunfo Pass (3411818), Tumey Hills (3612056), Tustin (3311767), Wilson Corner (3512044), Woodside (3712243)

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