Page author: David Giblin
Holodiscus discolor
creambush ocean-spray, hillside oceanspray
WTU specimens
Other herbaria

Distribution: Occurring on both sides of the Cascades crest in Washington; British Columbia to south California, east to the Rocky Mountains.

Habitat: Gravelly soil in open, dry to moist woods, coastal bluffs to moderate elevations in the mountains.

Flowers: June-August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Deciduous shrub, 1-3 m. tall, the branches slender, arching, the bark deep reddish-gray.

Leaves:

Leaf blades broadly ovate to ovate-lanceolate, 4-7 cm. long, green above and paler and woolly below, with 15-25 lobes, the lobes with fine teeth; leaves alternate, the petioles 10-15 mm. long.

Flowers:

Inflorescence a diffuse, pubescent panicle, 10-17 cm. long; calyx saucer-shaped, deeply 5-lobed; flowers about 5 mm. broad, the 5 oval, creamy-white petals slightly exceeding the sepals; stamens 20; pistils 5, 1.5 mm. long.

Fruit:

Achene 2 mm. long, covered with short, stiff hairs.

Accepted Name:
Holodiscus discolor (Pursh) Maxim.
Publication: Trudy Imp. S.-Peterburgsk. Bot. Sada 6(1): 254. 1879.

Synonyms:
Schizonotus aariaefolius Green var. discolor Kuntze
Schizonotus discolor Raf.
Sericotheca discolor (Pursh) Rydb.
Sericotheca discolor var. purshianus Rehd.
Spiraea ariaefolia Sm.
Spiraea discolor Pursh var. ariaefolia Wats.
Infraspecies:
var. discolor – creambush ocean-spray, hillside oceanspray
Additional Resources:

PNW Herbaria: Specimen records of Holodiscus discolor in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Holodiscus discolor checklist entry.

E-Flora BC: Holodiscus discolor atlas page.

CalPhotos: Holodiscus discolor photos.

USDA Plants: Holodiscus discolor information.

73 photographs:
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