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Montana Field Guide

Montana Field Guides

Glandular Labrador-tea - Ledum glandulosum
Other Names:  Ledum groenlandicum ssp. glandulosum, Rhododendron columbianum

Native Species

Global Rank: G5
State Rank: S4

Agency Status
MNPS Threat Rank:
C-value: 7

External Links

General Description
Stems erect-ascending, sparingly branched, to 120 cm; floral buds terminal, globose; foliage buds lateral, ovoid, closely crowded beneath the larger floral bud. Leaves alternate, petiolate, leathery; to ca. 15 mm long, elliptic to obovate, entire, dark green above, whitish, yellow glandular-dotted below. Inflorescence a crowded, umbel-like raceme of many flowers borne from the distal floral bud of last year’s stem, pedicels to 2 cm long. Flowers hypogynous, 5-merous; sepals, white, glandular, nearly separate; corolla dish-shaped; petals separate, white, oblong; stamens 10; ovary superior. Fruit an ovoid, 5-chambered capsule (Stickney in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Our plants are variety glandulosum.

Diagnostic Characteristics

Species Range

Observations in Montana Natural Heritage Program Database
Number of Observations: 164

(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)


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Citation for data on this website:
Glandular Labrador-tea — Ledum glandulosum.  Montana Field Guide.  .  Retrieved on , from