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Scientific Name: Crocanthemum greenei (B.L. Rob.) Sorrie |
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Common Name: island rush-rose |
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| Family: | Cistaceae | |
| Element Code: | PDCIS02090 | |
| USDA Plants Symbol: | ||
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | FT (1997-07-31) |
| State List: | None |
| Global Rank: | G3 |
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State Rank: |
S3 |
| Other Status: | SB_SBBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-11-05 |
| Lifeform: perennial evergreen shrub | ||||||||||||||
Blooming Period: (Jan)Mar-Jul(Aug)
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Elevation:
15 - 490 meters 50 - 1610 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Six occurrences were discovered between 1999 and 2006 on SRO Isl., where it had not been collected since the 1930's. Presumed extirpated on SMI Isl., where it was last collected in 1939. Increasing on SCZ Isl. After reduction of feral herbivore population. Threatened by herbivory from non-native deer on SCT Isl. Also threatened by altered fire regimes and non-native plants. Possibly threatened by erosion. Hybridizes with H. scoparium. |
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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: | 15 | 23 % |
| THREAT LIST: | ||
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| Grazing | 8 | 12% |
| Non-native animal impacts | 8 | 12% |
| Foot traffic/trampling | 7 | 10% |
| Erosion/runoff | 5 | 7% |
| Non-native plant impacts | 4 | 6% |
| Over-collecting/poaching | 3 | 4% |
| Road/trail construction/maint. | 2 | 3% |
| Other | 1 | 1% |
| Total Occurrences: | 66 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 16 | 7 | 2 | 1 | 39 |
| Occurrence Status: | |||||
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| Historical >20 Years | 47 | ||||
| Recent <=20 Years | 19 | ||||
| Presence: | |||||
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| Presumed Extant | 65 | ||||
| Possibly Extirpated | 1 | ||||
| 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) Los Angeles (LAX), Santa Barbara (SBA) |
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Quads: Name (Quad Code) San Miguel Island East (3312083), San Miguel Island West (3312084)*, Santa Catalina East (3311833), Santa Catalina North (3311844), Santa Catalina South (3311834), Santa Catalina West (3311845), Santa Cruz Island A (3311987), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Cruz Island D (3311984), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071) |
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Notes:
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Presumed Extant
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