Cassiope lycopodioides
species of plant

Cassiope lycopodioides is a plant species in the family Ericaceae, known by the common names clubmoss mountain-heather or Haida Gwaii mountain-heather. The species is native to northeast Asia and northwestern North America, where it grows on rocky slopes and crevices in arctic tundra and alpine tundra at elevations up to 2000 m.
Description
Cassiope lycopodioides is a perennial herb forming mats lying close to the ground. Leaves are narrow, up to 3 mm long, closely pressed against the stem. Curled hairs are present at the leaf tips, especially on younger leaves, and most populations (with the exception of those on Haida Gwaii) display hyaline or scarious leaf margins. Flowers are white, campanulate (bell-shaped), up to 20 mm across, and with a calyx of five fused sepals, often red or reddish green.
Distribution
The distribution of Cassiope lycopodioides spans an arc of the northern Pacific Rim, extending from northeast Asia over to northwestern North America. In Asia, the species ranges from high elevations on Honshu and Hokkaido in Japan, north through coastal mountain ranges and tundra of the Russian Far East.
In North America, the species is found across the Aleutian Islands into southern Alaska, coastal and interior British Columbia, and the U.S. State of Washington. Washington populations have been reported only from shaded alpine rock faces in King County and Snohomish County.
“Cassiope lycopodioides” enters the record as species of plant. Crown Archives preserves that source wording while asking what Cassiope, lycopodioides and species can confirm, complicate or overturn.
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“Cassiope lycopodioides” is worth following because a concise public description often conceals a longer documentary argument. Here, Cassiope, lycopodioides and species provides the most credible route into that argument.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Nov 21, 2025. The linked authority identifier is Q5756676. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2000.
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This entry incorporates text from “Cassiope lycopodioides” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.