Boechera retrofracta

(Reflexed Rockcress)

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Boechera retrofracta, Frisco Peninsula, Summit Co. 1689

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Boechera retrofracta, Frisco Peninsula, Summit Co. 3256

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Boechera retrofracta, Peaks Trail, Summit Co. 3382

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Boechera retrofracta, Frisco Peninsula, Summit Co. 3224

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Boechera retrofracta, Frisco Peninsula, Summit Co. 1668

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Seed pods, Boechera retrofracta, Frisco Peninsula, Summit Co. 3234

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Upper stem leaves, Boechera retrofracta, Frisco Peninsula, Summit Co. 1679

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Stem leaves, Boechera retrofracta, Frisco Peninsula, Summit Co. 3229

Scientific Name Boechera retrofracta (Arabis holboellii var. retrofracta) USDA PLANTS Symbol BORE6
Common Name Reflexed Rockcress, Second Rockcress ITIS Taxonomic Serial No. 509596
Family Brassicaceae (Mustard) SEINet
Reference
Click Here
Description Life zones and habitat: Foothills to subalpine (6000 to 10500 ft); forests, dry slopes, and sagebrush meadows.
Plant: Erect, wispy-looking biennial or short-lived perennial 6 to 40 inches tall, usually single-stemmed; lower stem covered with pubescent hairs.
Leaves: Basal leaves 3/8 to 1-1/8 inches long, oblong to oblanceolate, pointed tips and fine pubescent hairs; stem leaves oblong or lanceolate 1 to 1-1/2 inches long, with small ears at base, clasping.
Inflorescence: Numerous white to purplish drooping flowers in a raceme, each about 1/2-inch long overall with hairy calyx tube and pedicel.
Bloom Period: May to July.
Fruit: Long (up to 3+ inches), very narrow seed pods drooping downward from a sharply-bent pedicels.
Reference: "Flora of Colorado" by Jennifer Ackerfield, "Alpine Flora of the Rocky Mountains" by Richard Scott, "A Guide to Rocky Mountain Plants" by Nelson and Williams, Montana Field Guide and SEINet.
BONAP Distribution Map


Map Color Key
Colorado Status:
Native

© Tom Lebsack 2022

Banner photo: Ten Mile Range and Rhodiola integrifolia (King’s Crown) in Summit County