Taxon Details
Packera eurycephala var. lewisrosei
Lewis Rose's ragwort
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Taxon Summary:
Packera eurycephala var. lewisrosei, commonly known as Lewis Rose's ragwort, is a perennial herb in the Asteraceae that is found only in California. It occurs within Chaparral, Cismontane woodland, and Lower montane coniferous forest, growing at elevations from 274 to 1890 meters. Packera eurycephala var. lewisrosei is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Packera eurycephala (Torr. & A. Gray) W.A. Weber & A. Love var. lewisrosei (J.T. Howell) J.F. Bain |
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Common Name: Lewis Rose's ragwort |
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| Family: | Asteraceae | |
| Element Code: | PDAST8H182 | |
| USDA Plants Symbol: | PAEUL | |
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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: | None |
| Global Rank: | G4T2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_UCSC; USFS_S |
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CRPR Changes: |
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| Add Date: | 1984-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: Mar-Jul(Aug-Sep)
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Elevation:
274 - 1890 meters 900 - 6200 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Threatened by mining, road maintenance, and vehicles. Taxonomic study needed. See Senecio eurycephalus var. lewisrosei in The Jepson Manual (1993). See Leaflets of Western Botany 3(6):141-142 (1942) for original description. See Phytologia 49(1): 44-50 (1981) for revised nomenclature. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 12 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 23 | 59 % |
| THREAT LIST: | ||
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| Road/trail construction/maint. | 17 | 43% |
| Logging | 11 | 28% |
| ORV activity | 6 | 15% |
| Other | 6 | 15% |
| Mining | 4 | 10% |
| Recreational use (non-ORV) | 3 | 7% |
| Vandalism/dumping/litter | 2 | 5% |
| Non-native plant impacts | 2 | 5% |
| Erosion/runoff | 2 | 5% |
| Grazing | 1 | 2% |
| Improper burning regime | 1 | 2% |
| Disking | 1 | 2% |
| Total Occurrences: | 39 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 19 | 2 | 0 | 0 | 15 |
| Occurrence Status: | |||||
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| Historical >20 Years | 15 | ||||
| Recent <=20 Years | 24 | ||||
| Presence: | |||||
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| Presumed Extant | 39 | ||||
| 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) Butte (BUT), Plumas (PLU) |
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Quads: Name (Quad Code) Belden (4012113), Berry Creek (3912164), Caribou (4012112), Cherokee (3912165), Jonesville (4012114), Paradise East (3912175), Pulga (3912174) |
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Notes:
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Presumed Extant
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