Taxon Report
Streptanthus insignis Jeps. ssp. lyonii Kruckeberg & MorrisonArburua Ranch jewelflower |
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Taxon Summary
Streptanthus insignis ssp. lyonii, commonly known as Arburua Ranch jewelflower, is a annual herb in the Brassicaceae that is found only in California. It occurs within Coastal scrub, growing at elevations from 230 to 855 meters. Streptanthus insignis ssp. lyonii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Streptanthus insignis Jeps. ssp. lyonii Kruckeberg & Morrison |
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Common Name: |
Arburua Ranch jewelflower |
| Family: | Brassicaceae |
| Element Code: | PDBRA2G0Q1 |
| USDA Plants Symbol: | STINL |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Mar-May | Mar-May |
| Elevation: | 230-855 (755-2805) |
| General Habitats: | Coastal scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G3G4T2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 19 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 2 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 16 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Merced (MER) | |
| Quads: Name (Quad Code) | |
| Los Banos Valley (3612181), Ortigalita Peak (3612078), Ortigalita Peak NW (3612088), Ruby Canyon (3612171) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 12 | 63 % | |
| Grazing | 12 | 63% |
| Dam/Inundation | 6 | 31% |
| Recreational use (non-ORV) | 1 | 5% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 2 November 2025].