Silvery-lepidote shrubs. Leaves alternate. Inflorescences axillary or rarely terminal, cymose, few-flowered or reduced to a single flower; pedicels 2-or 4-bracteolate. Sepals united into a patelliform or hemispherical calyx; margin undulately lobed. Petals valvate (in R. euphemiae at first coherent), lepidote. Stamens 10, free; filaments flat; anthers obtuse, white, with a non-glandular apiculum. Disc short. Carpels free, glabrous or lepidote, with or without a short sterile apex. Cocci erect, blunt or shortly rostrate. Seed narrowly reniform or bluntly ellipsoid; aril linear, fleshy, situated between 2 cartilaginous strands, easily detached; outer testa thin, dark brown; sclerotesta smooth; hilum superficial, narrowly elliptic; raphe shrunken, subbasal, covered by outer testa only.
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