Dryas octopetala, L.

1. D. octopetala L. View in CoL , Sp. Pl. 501 (1753) View Cited Treatment .

Stems up to 0-5 m. Leaves 5-40 x 2-5-20 mm, oblong to ovate, cordate or truncate at base, rugose, crenate, stipulate, petiolate; lower surface covered with a dense tomentum of white, simple hairs; veins usually with some large, brownish, branched hairs. Pedicels, calyx and hypanthium pubescent and usually with purple glands. Petals 7-17 mm, white, oblong. Styles 2-3 cm in fruit. 2n —18, 36. On neutral and basic soils. Mountains o f Europe, southwards to N. Spain, C. Italy and S. Bulgaria; also at low altitudes in the north. Al Au Br Bu Cz Fe Ga Ge Hb He Hs Is It Ju No Po Rm Rs (N, C, W) Sb Su. Plants which lack branched hairs on the leaves and which are found in a number of populations, have been described as D. babingtoniana A. E. Porsild, Bull. Nat. Mus. Can. 160: 140 (1959). D. punctata Juz., Bull. Jard. Bot. URSS 28: 320 (1929), which has large glands on the upper surface of the leaves, has been described from Arctic Russia. Neither of these taxa is worthy of more than varietal rank.