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Montana Field Guides

Cream-bush Oceanspray - Holodiscus discolor

Native Species

Global Rank: G5
State Rank: S5
(see State Rank Reason below)

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

State Rank Reason (see State Rank above)
Common in western Montana.
General Description
Shrubs to 3 m tall. Stems erect; bark reddish tan, becoming gray. Leaves simple, petiolate, exstipulate; the blades 2–9 cm long, ovate, lobed, dentate, pubescent, sparsely so above. Inflorescence a many-flowered, highly branched pyramidal panicle at branch tips. Flowers small, perfect, perigynous, 5-merous; hypanthium saucer-shaped; sepals 1.5– 2 mm long; petals white, as long as sepals; stamens 20; styles 5. Fruit a hirsute, 1-seeded achene, ca. 1.5 mm long; style ca. 1 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range

Range Comments
BC to CA, ID and MT (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 766

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Rocky soil of dry, open forest, brushy slopes; valleys to lower subalpine (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Arvidson, Michael. 2000. Element occurrence form(s). U.S. Forest Service for the Montana Natural Heritage Program.
    • Fogelsong, M.L. 1974. Effects of fluorides on Peromyscus maniculatus in Glacier National Park. M.Sc. Thesis. Bozeman, Montana: Montana State University. 52 p.
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
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Citation for data on this website:
Cream-bush Oceanspray — Holodiscus discolor.  Montana Field Guide.  .  Retrieved on , from