Taxon Details
Brodiaea santarosae
Santa Rosa Basalt brodiaea
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© 2021 W. Juergen Schrenk |
© 2018 Ron Vanderhoff |
© 2018 Ron Vanderhoff |
Taxon Summary:
Brodiaea santarosae, commonly known as Santa Rosa Basalt brodiaea, is a perennial bulbiferous herb in the Themidaceae that is found only in California. It occurs within Valley and foothill grassland, growing at elevations from 565 to 1045 meters. Brodiaea santarosae is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Brodiaea santarosae T. Chester, W. Armstrong & K. Madore |
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Common Name: Santa Rosa Basalt brodiaea |
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| Family: | Themidaceae | |
| Element Code: | PMLIL0C0G0 | |
| USDA Plants Symbol: | BRSA | |
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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: | G1 |
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State Rank: |
S1 |
| Other Status: | USFS_S |
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CRPR Changes: changed from 3 to 1B.2 on 2013-09-17 |
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| Add Date: | 2008-02-05 |
| Date Edited: | 2023-06-06 |
| Lifeform: perennial bulbiferous herb | ||||||||||||||
Blooming Period: May-Jun
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Elevation:
565 - 1045 meters 1855 - 3430 feet |
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General Habitats:
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| Microhabitat Details: basaltic | ||||||||||||||
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Microhabitat:
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Notes: Previously CRPR 3; plants were known as possible hybrids between B. filifolia and B. orcuttii, but are now recognized as distinct. Research into the evolutionary origin of B. santarosae is currently underway. Possibly threatened by development. Forms sterile hybrids with B. terrestris ssp. kernensis. Not in TJM (1993). See Madroño 54(2):187-198 (2007) for original description. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 7 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 5 | 42 % |
| THREAT LIST: | ||
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| Development | 3 | 25% |
| Grazing | 2 | 16% |
| Road/trail construction/maint. | 2 | 16% |
| Surface water diversion | 1 | 8% |
| Mining | 1 | 8% |
| Non-native plant impacts | 1 | 8% |
| ORV activity | 1 | 8% |
| Total Occurrences: | 12 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 2 | 1 | 1 | 0 | 0 | 8 |
| Occurrence Status: | |||||
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| Historical >20 Years | 6 | ||||
| Recent <=20 Years | 6 | ||||
| Presence: | |||||
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| Presumed Extant | 12 | ||||
| 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) Riverside (RIV), San Diego (SDG) |
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Quads: Name (Quad Code) Fallbrook (3311743), Margarita Peak (3311744), Murrieta (3311752), Sitton Peak (3311754), Wildomar (3311753) |
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Notes:
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Presumed Extant
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