Aconitum columbianum

(Monk’s Hood)

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Aconitum columbianum, Black Powder Pass, Summit Co. 4346

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Aconitum columbianum, Gore Pass, Grand Co. 2002/2014

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Aconitum columbianum, Peak 7 Breckenridge, Summit Co. 8185

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Aconitum columbianum, Black Powder Pass, Summit Co. 4353

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Aconitum columbianum, Mayflower Gulch, Summit Co. 4788

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Aconitum columbianum, Black Powder Pass, Summit Co. 1373

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Aconitum columbianum, Mayflower Gulch, Summit Co. 6727

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Leaf, Aconitum columbianum, Booth Falls Trail, Eagle Co. 4350

Scientific Name Aconitum columbianum USDA PLANTS Symbol ACCO4
Common Name Monk's Hood ITIS Taxonomic Serial No. 18416
Family Ranunculaceae (Buttercup) SEINet
Reference
Click Here
Description Life zones and habitat: Foothills to subalpine (7200 to 12500 ft); moist areas in woodlands, meadows, wetlands, streamsides.
Plant: Erect perennial 1 to 5 feet tall, usually single, flexible and smooth stems.
Leaves: Up to 6 inches across, deeply divided into 3 to 5 jagged, toothed lobes, becoming smaller and fewer lobes upward; smooth to finely pubescent. Subspecies columbianum has no bulblets at the leaf/stem axils; whereas ssp. viviparum does.
Inflorescence: Deep purple flowers in open raceme (spike), each with showy sepals; petals hidden under the upper "hood" sepal.
Bloom Period: June to August.
References: "Guide to Colorado Wildflowers" by G.K. Guennel, "Flora of Colorado" by Jennifer Ackerfield, Jepson eFlora, and SEINet.
BONAP Distribution Map
Colorado Status:
Native

© Tom Lebsack 2022

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