Cassiope tetragona (L.) D.Don

Stems decumbent to erect, forming dense mats, hairy. Leaves closely imbricate, usually appressed to pair above, usually 4-ranked (decussate); blade narrowly triangular, dorsi-ventrally expanded marginally forming abaxial groove, 3-6 × 1-1.5 mm, margins thin, without curled hairs at leaf tips, surfaces with short, stiff pubescence. Flowers: sepals 2-3 mm, margins entire; petals connate to 2/3 their lengths, tips spreading to recurved, corolla white to yellowish, cylindric, 4-10 mm; stamens 2 mm. Capsules 3-5 mm. 2n = 26.

Dryish stony or sandy heaths or tundra, usually in mountainous areas.

Can be grown by cuttings or seedlings.