Antiphylla Haworth.

Herbs perennial, forming dense cushions or mats, lacking basal bulbils. Leaves alternate or opposite; petiole scarcely differentiated; leaf blade leathery, usually stiff and hard, usually coated with a white deposit of calcium carbonate derived from chalk glands set submarginally (rarely marginally) in pits in adaxial surface, margin entire but often denticulate-ciliate proximally; foliar crystals absent. Inflorescence cymose or flower solitary. Flowers bisexual, actinomorphic, 4- or 5-merous. Petals white, pink, or red, rarely yellow, not callose. Filaments subulate to linear; pollen 2-nucleate, exine tectum coarsely striate. Carpels connate proximally or for most of placental region, dehiscing distally in fruit; ovary subsuperior to subinferior. Integuments 2.

About 90 species: primarily in Asia and Europe, mainly Himalayan and montane, also extending into North America; 25 species (17 endemic) in China.