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MacDonald rockcress
Scientific Name: Arabis macdonaldiana
Family: Brassicaceae
Category: Dicot
Growth: Forb/herb
Duration: Perennial
Other Names: CA (McDonald's rock cress)
MacDonald's Rockcress (Arabis macdonaldiana)
Arabis macdonaldiana, commonly known as MacDonald's rockcress, is a flowering plant belonging to the mustard family.
Considerations for Pets
- This plant is a forb/herb, a non-woody plant.
Taxonomy and Nomenclature
- Scientific Name: Arabis macdonaldiana
- Common Name: MacDonald's rockcress
- Family: Brassicaceae (formerly Cruciferae)
- Synonyms: Arabis macdonaldiana Eastw. (Note: The text indicates this is not an active name.)
Distribution and Habitat
- Native to northern California and potentially Southern Oregon.
- Specific mention of a serpentine woodland habitat.
- Found in Josephine County, Oregon.
Conservation Status
- Listed as Endangered under the Endangered Species Act.
- Designated as a California endangered plant species, making it illegal to kill or possess the plant.
Morphology and Growth Habits
- Perennial forb/herb.
- Grows to a height of 5-15 inches (12.7-38.1 centimeters).
- Features purple to pink flowers.
- Develops a basal rosette of leaves.
Ecology
- Research suggests heavy metal accumulation in *Arabis macdonaldiana* may serve as a defense against herbivory.
Further Information
- Discover Life offers information on the biology, natural history, ecology, identification, and distribution of Arabis macdonaldiana.