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Koehler's rockcress

Scientific Name: Arabis koehleri var. koehleri

Family: Brassicaceae

Category: Dicot

Growth: Subshrub, Forb/herb

Duration: Perennial

Other Names:

       

Koehler's Rockcress

Koehler's Rockcress refers to several varieties within the Arabis and Boechera genera. This plant is noted for its rarity and specific habitat preferences.

Scientific Name and Common Names

  • Accepted Scientific Name: Boechera koehleri (Howell) Al-Shehbaz
  • Synonym: Arabis koehleri Howell
  • Common Name: Koehler's Rockcress

Taxonomy and Nomenclature

  • Family: Brassicaceae (Mustard Family)
  • Kingdom: Plantae
  • Taxonomic Rank: Species and Variety
    • Arabis koehleri var. koehleri
    • Arabis koehleri var. stipitata (Koehler's Stipitate Rock Cress)
  • Synonyms:
    • Arabis koehleri Howell
    • Arabis koehleri var. koehleri
    • Arabis koehleri var. stipitata

Distribution and Habitat

  • Koehler's Rockcress is a rare endemic species.
  • It is found on dry hills, often at high altitudes.
  • Specifically, Arabis koehleri var. stipitata grows in Northern California, particularly in the Klamath Mountains.
  • One specific location is along a short section of the Umpqua River Valley in Oregon, where it grows on rock faces.

Morphological Characteristics and Growth Habits

  • Koehler's Rockcress is described as a tough, tufted perennial herb.
  • It can also be classified as a subshrub or forb/herb.

Ecological Role

  • Koehler's Rockcress is listed as a California Rare Plant Rank 1B.3: Plants Rare, Threatened, or Endangered in California and Elsewhere.
  • It is associated with specific habitats and species, as demonstrated by reintroduction efforts.

Quirky Facts

  • Koehler's Rockcress is so rare that some populations are augmented through reintroduction programs.
  • One specific population is monitored for survival and growth after being reintroduced at the BLM North Bank Habitat Management Area.

Further Information

  • British Database of World Flora and Fauna
  • California Native Plant Society
  • ITIS (Integrated Taxonomic Information System)
  • BISON (Biodiversity Information Serving Our Nation) - http://bison.usgs.ornl.gov/api/scientificName/Arabis%20koehleri%20koehleri
  • Native Plant Society of Oregon