Taxon Details
Blennosperma nanum var. robustum
Point Reyes blennosperma
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Taxon Summary:
Blennosperma nanum var. robustum, commonly known as Point Reyes blennosperma, is a annual herb in the Asteraceae that is found only in California. It occurs within Coastal prairie, and Coastal scrub, growing at elevations from 10 to 145 meters. Blennosperma nanum var. robustum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Blennosperma nanum (Hook.) Blake var. robustum J.T. Howell |
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Common Name: Point Reyes blennosperma |
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| Family: | Asteraceae | |
| Element Code: | PDAST1A022 | |
| USDA Plants Symbol: | BLNAR | |
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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.2 |
| Fed List: | None |
| State List: | CR (1978-11-01) |
| Global Rank: | G4T2 |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Feb-Apr
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Elevation:
10 - 145 meters 35 - 475 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Threatened by competition and foot traffic. Possibly threatened by grazing, non-native plants, and trampling. Potentially threatened by trail construction. Plants found near Ft. Bragg in 1988 appear closest to this taxon. Some Pt. Reyes populations intermediate to var. nanum. See Leaflets of Western Botany 5:105-108 (1948) for original description. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 8 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 12 | 92 % |
| THREAT LIST: | ||
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| Grazing | 6 | 46% |
| Foot traffic/trampling | 5 | 38% |
| Non-native plant impacts | 4 | 30% |
| Other | 4 | 30% |
| Road/trail construction/maint. | 2 | 15% |
| Recreational use (non-ORV) | 1 | 7% |
| Erosion/runoff | 1 | 7% |
| Mining | 1 | 7% |
| Total Occurrences: | 13 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 8 | 2 | 0 | 0 | 2 |
| Occurrence Status: | |||||
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| Historical >20 Years | 7 | ||||
| Recent <=20 Years | 6 | ||||
| Presence: | |||||
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| Presumed Extant | 13 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Marin (MRN), Mendocino (MEN) |
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Quads: Name (Quad Code) Drakes Bay (3812218), Fort Bragg (3912347), Tomales (3812228) |
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Notes:
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Presumed Extant
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