Species Details
Deinandra conjugens
Otay tarplant
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Species Description:
Deinandra conjugens, commonly known as Otay tarplant, is a annual herb in the Asteraceae that is found in California and elsewhere. It occurs within Coastal scrub, and Valley and foothill grassland, growing at elevations from 25 to 300 meters. Deinandra conjugens is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Deinandra conjugens (Keck) B.G. Baldwin |
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Common Name: Otay tarplant |
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| Family: | Asteraceae | |
| Element Code: | PDAST4R070 | |
| USDA Plants Symbol: | DECO13 | |
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Synonyms/Other Names: |
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| Name Status: |
JEP, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | FT (1998-10-13) |
| State List: | CE (1979-11-01) |
| Global Rank: | G1G2 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2024-08-06 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: (Apr)May-Jun
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Elevation:
25 - 300 meters 80 - 985 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Threatened by development, agriculture, vehicles, illegal dumping, foot traffic, non-native plants, habitat disturbance, and Border Patrol activities. Possibly threatened by landfill construction. Known in BA from only one occurrence. State and federally listed as Hemizonia conjugens; see this name in The Jepson Manual. See Aliso 4(1):109 (1958) for original description, Madroño 25(3):159 (1978) for information on distribution and taxonomy, and Novon 9:462-471 (1999) for revised nomenclature. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 14 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 34 | 81 % |
| THREAT LIST: | ||
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| Non-native plant impacts | 25 | 59% |
| Development | 21 | 50% |
| Foot traffic/trampling | 15 | 35% |
| Road/trail construction/maint. | 15 | 35% |
| Vandalism/dumping/litter | 13 | 30% |
| ORV activity | 12 | 28% |
| Erosion/runoff | 10 | 23% |
| Wood cutting or brush clearing | 7 | 16% |
| Other | 5 | 11% |
| Improper burning regime | 3 | 7% |
| Altered flood/tidal/hydrologic regime | 2 | 4% |
| Recreational use (non-ORV) | 2 | 4% |
| Grazing | 2 | 4% |
| Non-native animal impacts | 1 | 2% |
| Total Occurrences: | 42 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 11 | 7 | 5 | 0 | 19 |
| Occurrence Status: | |||||
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| Historical >20 Years | 12 | ||||
| Recent <=20 Years | 30 | ||||
| Presence: | |||||
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| Presumed Extant | 42 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) Baja California (BA), California (CA) |
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California Counties and Islands: Name (Code) San Diego (SDG) |
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Quads: Name (Quad Code) Dulzura (3211667), Imperial Beach (3211751), Jamul Mountains (3211668), National City (3211761), Otay Mesa (3211658) |
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Notes:
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Presumed Extant
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