Taxon Report
Boechera koehleri (Howell) Al-ShehbazKoehler's stipitate rockcress |
 ©2019 Dana York |
Taxon Summary
Boechera koehleri, commonly known as Koehler's stipitate rockcress, is a perennial herb in the Brassicaceae that is found in California and elsewhere. It occurs within Chaparral, and Lower montane coniferous forest, growing at elevations from 155 to 1660 meters. Boechera koehleri is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
|
Scientific Name: |
Boechera koehleri (Howell) Al-Shehbaz |
|
Common Name: |
Koehler's stipitate rockcress |
| Family: | Brassicaceae |
| Element Code: | PDBRA060Z0 |
| USDA Plants Symbol: | |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: (Mar)Apr-Jul | (Mar)Apr-Jul |
| Elevation: | 155-1660 (510-5445) |
| General Habitats: | Chaparral, Lower montane coniferous forest |
| Microhabitat: | Rocky, Serpentine |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G3G4 |
|
State Rank: |
S3 |
| State List: | None |
| Fed List: | None |
| Other Status: | USFS_S |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 29 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 6 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 19 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Del Norte (DNT), Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| Broken Rib Mtn. (4112386), Devils Punchbowl (4112376), Figurehead Mtn. (4112383), Gasquet (4112378), High Divide (4112481), High Plateau Mtn. (4112388), Hiouchi (4112471), Hurdygurdy Butte (4112377), Kangaroo Mtn. (4112382), Preston Peak (4112375), Shelly Creek Ridge (4112387), Ship Mountain (4112367) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 8 | 28 % | |
| Erosion/runoff | 3 | 10% |
| Road/trail construction/maint. | 3 | 10% |
| Other | 2 | 6% |
| Foot traffic/trampling | 2 | 6% |
| ORV activity | 1 | 3% |
Selected References
| Novon 13(4):381-391 (2003) |
| Rhodora 43(511):426 (1941) |
| Boechera koehleri profile for potential Species of Conservation Concern evaluation (2018) |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 26 February 2025].