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Species Details
Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium Read more about this collection »
LeavesAlternate, narrowly elliptic to reverse lance-shaped, 4-8 cm long, entire to wavy-margined, yellowish-green, upper surface hairy
FlowersInflorescence of axillary clusters of 1-4 flowers; flowers radially symmetric; sepals 5, distinct, 5-17 mm long, leaf-like, hairy, some reddish hairs; petals 5, fused into bell shape, 6-15 mm long, white; stamens 10, unequal, filaments hairy on lower half, anthers egg-shaped; pistils 1
Fruits and SeedsCapsule, egg-shaped, 6-8 mm long
Scientific Name
Rhododendron albiflorum Hook.
Common Name
white-flowered rhododendron
General Description
Perennial shrub, 0.5-1.2 m tall, slender-branched, twigs hairy, bark peeling
Leaves
Alternate, narrowly elliptic to reverse lance-shaped, 4-8 cm long, entire to wavy-margined, yellowish-green, upper surface hairy
Flowers
Inflorescence of axillary clusters of 1-4 flowers; flowers radially symmetric; sepals 5, distinct, 5-17 mm long, leaf-like, hairy, some reddish hairs; petals 5, fused into bell shape, 6-15 mm long, white; stamens 10,…
Inflorescence of axillary clusters of 1-4 flowers; flowers radially symmetric; sepals 5, distinct, 5-17 mm long, leaf-like, hairy, some reddish hairs; petals 5, fused into bell shape, 6-15 mm long, white; stamens 10, unequal, filaments hairy on lower half, anthers egg-shaped; pistils 1
Fruits and Seeds
Capsule, egg-shaped, 6-8 mm long
Phenology
Flowers in July
Notes
Similar species:
Rhododendron lapponicum
R. lapponicum is a low alpine shrub. It is less than 25 cm tall and can be distinguished from R. albiflorum by evergreen leaves that are 1-15 mm long, and bright purple flowers.
Similar species:
Rhododendron lapponicum
R. lapponicum is a low alpine shrub. It is less than 25 cm tall and can be distinguished from R. albiflorum by evergreen leaves that are 1-15 mm long, and bright purple flowers.
Range/Distribution
Alberta: The foothills and Rocky Mountains
CAN (BC); USA (ID, MT, OR, WA)
Citation
Page Citation for Rhododendron albiflorum Hook.
Page Citation
"Species Details - Rhododendron albiflorum Hook., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-4988/12-69676. Accessed 09 Sep. 2025.
Specimen Information
There are 11 specimens of this Species.
111360 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Goose Mountain Lookout Tower
Date Collected1960-08-07
115546 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Willmore Wilderness Park, Adams Creek
Date Collected1976-08-08
115740 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Willmore Wilderness Park, Cote Creek
Date Collected1976-08-04
124320 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Kakwa Wildland Provincial Park, Punchbowl Creek
Date Collected2006-07-14
127562 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, West Castle Wetlands Ecological Reserve
Date Collected1979-07-04
127563 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Nose Mountain
Date Collected1984-06-25
128890 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, British Columbia, Teepee Mountain
Date Collected1983-07-18
134659 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, British Columbia, Vancouver Island, Coronation Mountain
Date Collected1973-08-14
136523 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, British Columbia, Yoho National Park, Takakkaw Falls
Date Collected1973-07-23
139923 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Grande Cache
Date Collected2012-07-20
144219 - Rhododendron albiflorum Hook.
University of Alberta Vascular Plant Herbarium
Common Namewhite-flowered rhododendron
Place CollectedNorth America: Canada, Alberta, Beehive Natural Area, Beehive Mountain
Date Collected1980-07-04