Native Plants
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Arabis platysperma var. howellii
Arabis platysperma A. Gray var. howellii (S. Watson) Jeps.
Howell's Pioneer Rockcress, Howell's Rock Cress
Brassicaceae (Mustard family)
Synonym(s): Arabis conferta, Arabis covillei, Arabis howellii, Arabis inamoena var. acutata, Arabis leibergii, Arabis platyloba, Arabis platysperma var. imparata
USDA Symbol: ARPLH2
USDA Native Status: L48 (N)
From the Image Gallery
No images of this plant
Plant Characteristics
Duration: PerennialHabit: Herb , Subshrub
Fruit Type: Silique
Size Notes: Up to about 1 foot tall.
Bloom Information
Bloom Color: White , PurpleBloom Time: Jun , Jul , Aug
Bloom Notes: White to dark lavender.
Distribution
USA: CA , ID , NV , ORNative Habitat: Rock outcrops, talus slopes and gravelly soil in alpine and subalpine habitats.
Web Reference
Webref 30 - Calflora (2018) CalfloraWebref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Arabis platysperma var. howellii in USDA PlantsFNA: Find Arabis platysperma var. howellii in the Flora of North America (if available)
Google: Search Google for Arabis platysperma var. howellii
Metadata
Record Modified: 2020-10-27Research By: CBR