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Montana Field Guide

Montana Field Guides

White-flowered Rhododendron - Rhododendron albiflorum


Global Rank: G5
State Rank: S3S4

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 8

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General Description
Deciduous, acutely branching shrub. Stems erect-ascending, to 150 cm, sparingly branched with coarse, reddish hairs; buds dimorphic; terminal bud foliaceous; floral buds lateral on last year’s stem. Leaves alternate, short-petiolate, thin; blades obovate, to ca. 8 cm long, bright glossy green when fresh, paler beneath, entire, minutely glandular-ciliate, usually with scattered, coarse, reddish hairs. Inflorescence of 1 to 2 flowers from lateral floral buds below the current season’s growth; pedicels ca. as long as the flowers. Flowers hypogynous, 5-merous; calyx foliaceous; corolla broadly bell-shaped, to 2 cm long, the rounded lobes as long as the tube, white; stamens 10; ovary superior. Fruit a 5-chambered capsule (Stickney in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Present
 


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

Summary of Observations Submitted for Montana
Number of Observations: 54

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

Recency

 

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



Habitat
Open, moist, coniferous forests; upper montane, lower subalpine (Stickney in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

References
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Citation for data on this website:
White-flowered Rhododendron — Rhododendron albiflorum.  Montana Field Guide.  .  Retrieved on , from