Saxifragaceae, Saxifrage  family

Herbs; leaves alternate or opposite; flowers usually bisporangiate. ranging from scarcely perigynous through perigynous or partially epigynous; perianth regular or slightly zygomorphic; sepals and petals 4-5 or petals none; stamens as many as petals, twice as many, or more; carpels 2-4. united to top of styles, or only the styles separate, or only bases of carpels united, then stigmas, styles, and upper part of ovaries separate; locules  as many as carpels or locule 1 with parietal placentae as many as carpels; fruit a capsule or of separate follicles. (incl. Penthorum L.)