|Scientific Name||Boechera stricta (Arabis drummondii)||USDA PLANTS Symbol||ARDR|
|Common Name||Drummond's Rockcress||ITIS Taxonomic Serial No.||822989|
Life zones and habitat: Montane to alpine (7000 to 13000 ft). Gravelly or rocky slopes, meadows, openings.
Plant: Erect perennial 1 to 3 feet tall (6 to 18 inches at altitude), usually 1 but up to 4 slender stem.
Leaves: Mostly basal leaves from a rosette, 3/4 to 3 inches long, narrow, oblanceolate, pointed tip, fleshy.
Inflorescence: Several small, erect blossoms in a raceme, each with 4 white to pale lavender petals.
Bloom Period: May to August.
Fruit: Capsules are smooth, very narrow, linear, 1-1/2 to 4 inches long and about 1/8-wide or less; erect, usually appressed to the center stalk of the inflorescence.
Reference: "Guide to Colorado Wildflowers" by G.K. Guennel, "Flora of Colorado" by Jennifer Ackerfield and SEINet.
Note: In early spring, some plants become infected with Puccinia monoica, a rust fungus that stops the rock cress from flowering and forces it to form the brilliant yellow pseudoflowers containing the reproductive structures of the rust fungus. See last group of photos above. For more information about the fungus, click here.
|BONAP Distribution Map
Map Color Key
© Tom Lebsack 2023
Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County