Cassiope mertensiana |
Cassiope mertensiana subsp. ciliolata |
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Mertens' moss-heather, Mertens' mountain-heather, western bell heather, western moss heather, white heather, white moss-heather, White Mountain-heather |
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Stems | spreading or ascending to erect, forming dense mats, puberulent, glandular-hairy, or glabrous. |
glabrous when young. |
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Leaves | imbricate, somewhat appressed to leaf above, usually 4-ranked; blade ovate-lanceolate, abaxial groove absent, 3–4.5 × 1–1.5 mm, margins thin but not scarious, without curled hairs at leaf tips, surfaces glabrous to glandular-hairy or sparsely hairy. |
blade margins eglandular-hairy, especially on young leaves, hairs scattered, branched. |
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Flowers | sepals 2–3 mm, margins entire or erose; petals connate to 1/3 their lengths, tips recurved, corolla white, campanulate, 5–8 mm; stamens to 3 mm. |
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Capsules | 1.5–4 mm. |
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Cassiope mertensiana |
Cassiope mertensiana subsp. ciliolata |
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Phenology | Flowering Jul–Aug. | |||||||||||||
Habitat | Alpine fellfields, subalpine forests, sometimes red fir forests | |||||||||||||
Elevation | 1500-2600 m (4900-8500 ft) | |||||||||||||
Distribution |
AK; CA; ID; MT; NV; OR; WA; AB; BC
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CA |
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Discussion | Subspecies 4 (4 in the flora). Four subspecies were recognized by Piper, based on differences in pubescence of the stems and leaf margins. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies ciliolata is endemic to the mountain ranges of northwestern California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 447. | FNA vol. 8, p. 448. | ||||||||||||
Parent taxa | Ericaceae > subfam. Cassiopoideae > Cassiope | Ericaceae > subfam. Cassiopoideae > Cassiope > Cassiope mertensiana | ||||||||||||
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Synonyms | Andromeda mertensiana | |||||||||||||
Name authority | (Bongard) G. Don: Gen. Hist. 3: 829. (1834) | Piper: Smithsonian Misc. Collect. 50: 196. (1907) | ||||||||||||
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