| + | Dryas octopetala, Linn. Densely cespitose with a woody caudex or St.: lvs. rugose, elliptic, oval or oblong, deeply and regularly crenate, white-tomentose beneath: scapes 2-8 in. long; fls. white, the petals elliptic or obovate-elliptic, and the sepals linear or linear-lanceolate: seeds with a feathered awn 1 in. long. North temperate and arctic regions. |