Taxon Details
Arabis mcdonaldiana
McDonald's rockcress
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© 2003 Norman Jensen |
© 2009 Norman Jensen |
© 2005 Dwain Goforth |
Taxon Summary:
Arabis mcdonaldiana, commonly known as McDonald's rockcress, is a perennial herb in the Brassicaceae that is found in California and elsewhere. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 135 to 1800 meters. Arabis mcdonaldiana is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Arabis mcdonaldiana Eastw. |
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Common Name: McDonald's rockcress |
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| Family: | Brassicaceae | |
| Element Code: | PDBRA06150 | |
| 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: | FE (1978-09-28) |
| State List: | CE (1979-07-01) |
| Global Rank: | G3 |
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State Rank: |
S3 |
| Other Status: | SB_BerrySB; SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2022-02-01 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: May-Jul
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Elevation:
135 - 1800 meters 445 - 5905 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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| Threat List Total: | 4 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 13 | 45 % |
| THREAT LIST: | ||
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| Mining | 10 | 34% |
| Road/trail construction/maint. | 3 | 10% |
| Grazing | 1 | 3% |
| Other | 1 | 3% |
| Total Occurrences: | 29 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 8 | 7 | 1 | 0 | 0 | 13 |
| Occurrence Status: | |||||
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| Historical >20 Years | 19 | ||||
| Recent <=20 Years | 10 | ||||
| Presence: | |||||
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| Presumed Extant | 29 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA), Oregon (OR) |
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California Counties and Islands: Name (Code) Del Norte (DNT), Mendocino (MEN), Siskiyou (SIS) |
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Quads: Name (Quad Code) Broken Rib Mtn. (4112386), Devils Punchbowl (4112376), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Noble Butte (3912386), Polar Bear Mtn. (4112385), Preston Peak (4112375), Shelly Creek Ridge (4112387) |
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Notes:
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Presumed Extant
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