Taxon Details
Centromadia parryi ssp. congdonii
Congdon's tarplant
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Taxon Summary:
Centromadia parryi ssp. congdonii, commonly known as Congdon's tarplant, is a annual herb in the Asteraceae that is found only in California. It occurs within Valley and foothill grassland, growing at elevations from 0 to 230 meters. Centromadia parryi ssp. congdonii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Centromadia parryi (Greene) Greene ssp. congdonii (Rob. & Greenm.) B.G. Baldwin |
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Common Name: Congdon's tarplant |
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| Family: | Asteraceae | |
| Element Code: | PDAST4R0P1 | |
| USDA Plants Symbol: | CEPAC | |
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G3T2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1994-01-01 |
| Date Edited: | 2024-05-09 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: (Apr)May-Oct(Nov)
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Elevation:
0 - 230 meters 0 - 755 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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| Threat List Total: | 18 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 76 | 78 % |
| THREAT LIST: | ||
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| Development | 38 | 38% |
| Other | 21 | 21% |
| Grazing | 20 | 20% |
| Road/trail construction/maint. | 15 | 15% |
| Non-native plant impacts | 12 | 12% |
| Foot traffic/trampling | 10 | 10% |
| Disking | 9 | 9% |
| Agriculture | 9 | 9% |
| Recreational use (non-ORV) | 6 | 6% |
| Biocides | 4 | 4% |
| ORV activity | 4 | 4% |
| Vandalism/dumping/litter | 2 | 2% |
| Waterway bank protection/maintenance | 1 | 1% |
| Altered flood/tidal/hydrologic regime | 1 | 1% |
| Erosion/runoff | 1 | 1% |
| Hybridization | 1 | 1% |
| Improper burning regime | 1 | 1% |
| Military operations | 1 | 1% |
| Total Occurrences: | 98 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 9 | 17 | 32 | 14 | 15 | 11 |
| Occurrence Status: | |||||
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| Historical >20 Years | 55 | ||||
| Recent <=20 Years | 43 | ||||
| Presence: | |||||
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| Presumed Extant | 83 | ||||
| Possibly Extirpated | 6 | ||||
| Presumed Extirpated | 9 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Alameda (ALA), Contra Costa (CCA), Monterey (MNT), San Luis Obispo (SLO), San Mateo (SMT), Santa Clara (SCL), Santa Cruz (SCR)*, Solano (SOL)* |
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Quads: Name (Quad Code) Altamont (3712166), Arroyo Grande NE (3512025), Benicia (3812212)*, Byron Hot Springs (3712176), Calaveras Reservoir (3712147), Chualar (3612155), Diablo (3712178), Dublin (3712168), Gonzales (3612154), Hayward (3712261)*, Livermore (3712167), Los Gatos (3712128), Milpitas (3712148), Moss Landing (3612177), Mountain View (3712241), Natividad (3612165), Newark (3712251), Niles (3712158), Palo Alto (3712242), Palo Escrito Peak (3612144)*, Pismo Beach (3512026), Prunedale (3612176)(?), Salinas (3612166), San Jose East (3712137)*, San Jose West (3712138), San Leandro (3712262)*, San Luis Obispo (3512036), Santa Teresa Hills (3712127), Seaside (3612157), Soledad (3612143), Spreckels (3612156), Tassajara (3712177), Vine Hill (3812211), Walnut Creek (3712281)*, Watsonville East (3612186)*, Watsonville West (3612187) |
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Notes:
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Presumed Extant
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