Species Details

Centromadia parryi ssp. australis

southern tarplant

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Scientific Name:
Centromadia parryi (Greene) Greene ssp. australis (Keck) B.G. Baldwin
Common Name:
southern tarplant
Family: Asteraceae
Element Code: PDAST4R0P4
USDA Plants Symbol: CEPAA
Synonyms/Other Names:
CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G3T2
State Rank:
S2
Other Status: SB_CalBG/RSABG; SB_CRES; SB_SBBG
CRPR Changes:
Add Date: 1994-01-01
Date Edited: 2021-05-26
Lifeform: annual herb
Blooming Period: May-Nov
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Elevation:
0 - 480 meters
0 - 1575 feet
General Habitats:
  • Marshes and swamps (margins)
  • Valley and foothill grassland (vernally mesic)
  • Vernal pools
Microhabitat Details:
Microhabitat:
Notes:
Need confirmation of SCT Isl. occurrences. Many ORA Co. occurrences recently extirpated. Many historical occurrences also extirpated; need information. Population fragmentation a serious problem, and plant continues to be threatened by urbanization, vehicles, development, foot traffic, grazing, habitat disturbance, and competition from non-native plants. A synonym of Hemizonia parryi ssp. australis in TJM (1993). See MadroƱo 3(1):15 (1935) for original description, and Novon 9:462-471 (1999) for revised nomenclature.
Threats:
Taxonomy:
Threat List Total: 16
Total EOs % of EOs
EOs with Threat Listed: 43 46 %
THREAT LIST:
Development 20 21%
Other 14 14%
Foot traffic/trampling 11 11%
Road/trail construction/maint. 10 10%
Non-native plant impacts 7 7%
Total Occurrences: 94
Element Occurrence Ranks:
A B C D X U
3 17 11 4 10 49
Occurrence Status:
Historical >20 Years 56
Recent <=20 Years 38
Presence:
Presumed Extant 84
Possibly Extirpated 4
Presumed Extirpated 6
California Endemic:
California Island:
States: Name (Code)
Baja California (BA), California (CA)
California Counties and Islands: Name (Code)
Los Angeles (LAX), Orange (ORA), San Diego (SDG), Santa Barbara (SBA), Ventura (VEN)
Quads: Name (Quad Code)
Anaheim (3311778), Baldwin Park (3411718), Beverly Hills (3411814)*, Canada Gobernadora (3311755), Del Mar (3211782), Dos Pueblos Canyon (3411948), El Monte (3411811), Escondido (3311711), Goleta (3411947), Hollywood (3411813)*, Inglewood (3311883)*, Laguna Beach (3311757), Long Beach (3311872)*, Los Alamitos (3311871), Morro Hill (3311733), Mt. Wilson (3411821), Newbury Park (3411828), Newport Beach (3311768), Orange (3311777), Pasadena (3411822)*, Pitas Point (3411934)(?), San Marcos (3311722), San Pasqual (3311618), Santa Catalina East (3311833)?, Seal Beach (3311861), South Gate (3311882)*, Sunland (3411833), Torrance (3311873), Tustin (3311767), Valley Center (3311721), Venice (3311884)*
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.
Presumed Extant
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