Rhododendron albiflorum
white rhododendron
WTU specimens
Other herbaria

Distribution: British Columbia to Oregon, east to Montana

Habitat: Moist, usually forested, slopes, mid- to high elevations in the mountains

Flowers: June - August

Origin: Native

Conservation Status: Not of concern

Description:
General:

Deciduous shrubs 1-2 m. tall, the young twigs finely puberulent and covered with stiff, aligned reddish hairs, this same hairiness present on young leaves, bracts and calyx.

Leaves:

Leaves thin, deep, clear green on the upper surface, lighter beneath, elliptic-oblanceolate, nearly entire, frequently clustered toward the branch tips, 4-9 cm. long on petioles 5-10 mm. long.

Flowers:

Flowers in axillary clusters of 1-4 along the stems, white to ochroleucous; pedicels 1-1.5 cm. long, glandular pubescent and covered with coarse, stiff reddish hairs; sepals 5, distinct, leaf-like, pubescent with coarse, gland-tipped hairs and appressed, eglandular, reddish hairs; corolla united, 1.5-2 cm. broad, 5-lobed about the length, the lobes spreading, nearly equal, entire; stamens 10, exerted, the filaments densely hairy on the lower half; ovary superior, long-hairy.

Fruits:

Capsule 5-celled, pubescent, short.

Accepted Name:
Rhododendron albiflorum Hook.
Publication: Fl. Bor.-Amer. 2: 43, plate 133. 1834. 1834.

Synonyms & Misapplications:
Azaleastrum albiflorum (Hook.) Rydb.
Rhododendron albiflorum Hook. var. warrenii (A. Nelson) M.A. Lane
Additional Resources:

PNW Herbaria: Specimen records of Rhododendron albiflorum in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Rhododendron albiflorum checklist entry.

E-Flora BC: Rhododendron albiflorum atlas page.

CalPhotos: Rhododendron albiflorum photos.

USDA Plants: Rhododendron albiflorum information.

46 photographs:
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