Kalmia procumbens |
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alpine-azalea, trailing azalea |
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Habit | Shrubs much-branched and mat-forming, ca. 0.1 m. Twigs terete or slightly 2-angled proximal to node, glabrous or sparsely hairy. |
Leaves | opposite; petiole absent or 0.1–2 mm, glabrous or puberulent; blade ovate or oval to narrowly lanceolate, 0.3–0.8 × 0.2–0.4 cm, margins revolute, apex obtuse, abaxial surface tomentulose, adaxial glabrous or sparsely puberulent toward base, midribs with stalked glands/purple clavate trichomes. |
Inflorescences | terminal, corymbiform racemes or umbels, 2(–6)-flowered, sometimes flowers solitary. |
Pedicels | 5–20 mm. |
Flowers | sepals crimson, ovate-lanceolate, 1.2–1.5 mm, apex obtuse, surfaces glabrous, margins ciliate; petals (spreading), connate ca. 1/2 their lengths, light to deep pink or white, 3–5 × 2–3.5 mm, glabrous; stamens 5; filaments 2–3 mm; style 0.5–0.8 mm. |
Capsules | 2–3-locular, 3–4 × 3–4 mm, glabrous. |
Seeds | winged, oblong, 0.5–1.4 mm. |
2n | = 24. |
Kalmia procumbens |
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Phenology | Flowering Jun–Aug. |
Habitat | Dry to moist, subarctic, arctic, and alpine tundra, coastal marshes |
Elevation | 0-2500 m (0-8200 ft) |
Distribution |
AK; ME; NH; NY; WA; WY; AB; BC; MB; NL; NT; NU; ON; QC; SK; YT; c Europe; Greenland; n Europe; n Asia
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Discussion | Kalmia procumbens is the only species of the genus that is not endemic to North America. An attractive dwarf shrub, it is sometimes cultivated in rock gardens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 485. |
Parent taxa | |
Sibling taxa | |
Synonyms | Azalea procumbens, Chamaecistus procumbens, Loiseleuria procumbens, Rhododendron procumbens |
Name authority | (Linnaeus) Gift, Kron & P. F. Stevens ex Galasso, Banfi & F. Conti: F. Conti et al., Annot. Checkl. Ital. Vasc. Fl. 20. (2005) |
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