Description from Flora of China
Cassiope pulvinalis T. Z. Hsu.
Shrubs 2–6(–8) cm tall. Stems suberect or decumbent, glabrous. Leaves ± spreading; leaf blade elliptic or oblong, 1.5–3.4 × 0.6–1.2 mm, leathery, both surfaces glabrous and plane, sometimes midvein inconspicuously raised abaxially, base indistinguishable, margin incrassate, scarious, with several brown setula. Flower nutant. Pedicel 1.5–2.5 cm, densely arachnoid-villous. Calyx purple; lobes elliptic or ovate, 2–3 mm, glabrous, margin membranous. Corolla white, campanulate, 5–8 mm, abaxially glabrous; lobes erect or subspreading, 1–3 mm. Stamens 8, ca. 2.5 mm; filaments pilose; awns 0.7–1.5 mm. Ovary ca. 1.5 mm in diam. Capsule ca. 3 mm in diam., enclosed by persistent corolla. Fl. May–Jul, fr. Jun–Oct.
Grassy mountain slopes, alpine moorlands, rocks, rock crevices; 3000–4300 m. NW Yunnan [Myanmar].