Taxon Details
Boechera constancei
Constance's rockcress
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Taxon Summary:
Boechera constancei, commonly known as Constance's rockcress, is a perennial herb in the Brassicaceae that is found only in California. It occurs within Chaparral, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 975 to 2025 meters. Boechera constancei is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Boechera constancei (Rollins) Al-Shehbaz |
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Common Name: Constance's rockcress |
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| Family: | Brassicaceae | |
| Element Code: | PDBRA06090 | |
| USDA Plants Symbol: | ||
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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.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | USFS_S |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-08-25 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: May-Jul
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Elevation:
975 - 2025 meters 3200 - 6645 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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| Threat List Total: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 40 | 68 % |
| THREAT LIST: | ||
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| Logging | 29 | 49% |
| Road/trail construction/maint. | 12 | 20% |
| Mining | 7 | 11% |
| Other | 5 | 8% |
| Wood cutting or brush clearing | 3 | 5% |
| ORV activity | 3 | 5% |
| Improper burning regime | 2 | 3% |
| Biocides | 1 | 1% |
| Disease | 1 | 1% |
| Erosion/runoff | 1 | 1% |
| Total Occurrences: | 59 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 4 | 20 | 3 | 1 | 0 | 31 |
| Occurrence Status: | |||||
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| Historical >20 Years | 37 | ||||
| Recent <=20 Years | 22 | ||||
| Presence: | |||||
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| Presumed Extant | 59 | ||||
| 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) Plumas (PLU), Sierra (SIE) |
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Quads: Name (Quad Code) Belden (4012113), Bucks Lake (3912182), Canyondam (4012121), Caribou (4012112), Crescent Mills (4012018), Greenville (4012028), La Porte (3912068), Meadow Valley (3912181), Onion Valley (3912078), Quincy (3912088), Spring Garden (3912087), Twain (4012111) |
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Notes:
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Presumed Extant
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