Taxon Report
Cercocarpus traskiae Eastw.Catalina Island mountain-mahogany |
 © 2021 Zoya Akulova |
Classification
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Scientific Name: |
Cercocarpus traskiae Eastw. |
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Common Name: |
Catalina Island mountain-mahogany |
| Family: | Rosaceae |
| Element Code: | PDROS08030 |
| USDA Plants Symbol: | CETR4 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial evergreen shrub |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 100-250 (330-820) |
| General Habitats: | Chaparral, Coastal scrub |
| Microhabitat: | Gabbroic, Rocky |
| Microhabitat Details: | sausserite gabbro |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
|
State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | IUCN_CR; SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 1 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX) | |
| Quads: Name (Quad Code) | |
| Santa Catalina South (3311834) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 100 % | |
| Erosion/runoff | 1 | 100% |
| Grazing | 1 | 100% |
| Hybridization | 1 | 100% |
| Insufficient population/stand size | 1 | 100% |
| Other | 1 | 100% |
Notes
| Known from only one occurrence with fewer than 15 trees in Wild Boar Gully; one of the rarest trees in CA. Mainland occurrence of one plant from LAX Co. (113C) needs confirmation; possibly introduced or hybrid with C. betuloides var. betuloides. Recovery work in progress. See Proceedings of the California Academy of Sciences III 1:136 (1898) for original description, and Conservation Biology 3(1):52-58 (1989) for discussion of hybridization. |
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Threats: |
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Threatened by feral herbivores and hybridization. |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 28 December 2024].