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Waldo rockcress

Scientific Name: Arabis aculeolata

Family: Brassicaceae

Category: Dicot

Growth: Forb/herb

Duration: Perennial

Other Names:

       

Arabis aculeolata: Waldo Rockcress

Arabis aculeolata, commonly known as Waldo rockcress, is a flowering plant belonging to the mustard family.

Considerations for Pets

  • This is a forb/herb (a non-woody plant that is not a grass).
  • Leaves are in a basal rosette

Taxonomy and Nomenclature

  • Scientific Name: Arabis aculeolata Greene
  • Common Name: Waldo rockcress
  • Family: Brassicaceae (mustards, moutardes, crucifers)
  • Order: Brassicales
  • Genus: Arabis L. (rockcress)
  • Rank: Species
  • Symbol: ARAC4 (USDA Plants database)

Distribution and Habitat

  • Native to a small range in the mountains.
  • Specifically found in southwestern Oregon, chiefly in serpentine soil.
  • Observed near Rough & Ready Creek near Cave Junction, Oregon.
  • Found in the Rogue River-Siskiyou National Forest, Illinois River Trail, Selma, OR.
  • Specifically mentioned in the Eight Dollar Mountain Botanical Area, Josephine County, OR.
  • Also found north of the 1850s mining town of Waldo, Oregon.

Morphological Characteristics

  • Perennial herb.
  • Erect stems with spreading hairs on the lower part.
  • Leaves in basal rosette, 1/2–1 inch in size, entire, surface densely coated with hairs.
  • McDonald’s rock cress, a similar plant, has relatively large, conspicuous lavender flowers, while Waldo Rockcress is hairy and taller.

Cultivation

  • Requires feeding with a slow-release granular fertilizer in the spring.