Iris missouriensis

(Rocky Mountain Iris)

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Iris missouriensis, Mosquito Gulch, Park Co. 0908

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Iris missouriensis, Lower Cataract Lake, Summit Co. 0953/0973

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Iris missouriensis, Breakneck Pass, Park Co. 4735

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Iris missouriensis, Breakneck Pass, Park Co. 9891

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Iris missouriensis, North Swan Valley, Summit Co. 4767

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Iris missouriensis, Breakneck Pass, Park Co. 9999

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Iris missouriensis, North Swan Valley, Summit Co. 5073

Scientific Name Iris missouriensis USDA PLANTS Symbol IRMI
Common Name Rocky Mountain Iris, Wild Iris ITIS Taxonomic Serial No. 43221
Family Iridaceae (Iris) SEINet
Reference
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Description Life zones and habitat: Foothills to subalpine (5200 to 11000 ft.); moist areas in meadows, along ditches, stream banks, and aspen groves.
Plant: Erect perennial growing in large patches, stout fleshy stem 8 to 24 inches tall.
Leaves: Long, linear basal leaves, sword-like, flexible, 8 to 12 inches long.
Inflorescence: Large flowers up to 4 inches across with 3 reflexed (bending downward) blue-purple sepals with white and yellow/orange streaks, 3 erect petals and 3 petal-like pistils.
Bloom Period: May to July.
References: "Flora of Colorado" by Jennifer Ackerfield and "Guide to Colorado Wildflowers" by G.K. Guennel.
BONAP Distribution Map

Colorado Status:
Native

© Tom Lebsack 2022

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