Taxon Report
Sibara filifolia (Greene) GreeneSanta Cruz Island winged-rockcress |
 © 2008 Kim M Klementowski |
Classification
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Scientific Name: |
Sibara filifolia (Greene) Greene |
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Common Name: |
Santa Cruz Island winged-rockcress |
| Family: | Brassicaceae |
| Element Code: | PDBRA2A020 |
| USDA Plants Symbol: | SIFI |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: (Feb)Mar-Apr | (Feb)Mar-Apr |
| Elevation: | 60-305 (195-1000) |
| General Habitats: | Coastal scrub |
| Microhabitat: | Openings (often) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG; SB_SBBG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 7 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 1 |
| Unknown (U) | 5 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Santa Barbara (SBA) | |
| Quads: Name (Quad Code) | |
| San Clemente Island South (3211873), Santa Catalina East (3311833), Santa Catalina North (3311844), Santa Catalina South (3311834), Santa Cruz Island B (3311986)*, Santa Cruz Island C (3311985)* | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 14 % | |
| Foot traffic/trampling | 1 | 14% |
Notes
| Rediscovered in 1986 by M. Beauchamp and A. Kelly. Last seen on SCZ Isl. In 1932. Feral herbivores removed from SCM Isl., and vegetation recovering. Threatenedy by foot traffic and non-native plants. Possibly threatened on SCT Isl. by deer browsing and insect predation. See Madroño 45(4):328 (1998) for distributional information and 50(3):181-186 (2003) for genetic diversity information. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 8 January 2025].