(Rock Spirea)

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Holodiscus dumosus, Curecanti Needle Overlook, Gunnison Co. 8192

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Holodiscus dumosus, Curecanti Needle Overlook, Gunnison Co. 8175

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Holodiscus dumosus, Along FR 311, Four Mile Area, Chaffee Co. 9693

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Holodiscus dumosus, Along FR 311, Four Mile Area, Chaffee Co. 9703

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Holodiscus dumosus, Curecanti Needle Overlook, Gunnison Co. 8186

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Holodiscus dumosus, Along FR 311, Four Mile Area, Chaffee Co. 9701

Scientific Name Holodiscus dumosus (Holodiscus discolor var. dumosus) USDA PLANTS Symbol HODU
Common Name Rock Spirea ITIS Taxonomic Serial No. 25178
Family Rosaceae (Rose) SEINet
Reference
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Description Life zones and habitat: Plains to montane (5200 to 10500 ft.); rocky canyons, cliffsides and coniferous forests.
Plant: Shrub spreading to 10 ft. across; densely branched with reddish brown to grey stems and peeling bark when old.
Leaves: oblanceolate to obovate or elliptic, 1/4 to 1-1/4 inches long and up to 1 inch wide; surfaces have pubescent hairs, dark green above, whitish green beneath; edges have rounded teeth; newer growth with solitary, alternate leaves; leaves on older growth are in clusters.
Inflorescence: Many tiny white flowers in racemose clusters arising from leaf axils and at branch tips; flowers with 5 white, cream or pinkish petals less than 1/8-inch long with rounded tips; 5 very short pointed pinkish, hairy sepals; 5 pistils and numerous stamens.
Bloom Period: June to September.
References: "Flora of Colorado" by Jennifer Ackerfield, American Southwest, SW Colorado Wildflowers 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