Callianthemum (Greek, beautiful flower). Ranunculaceae. Two or 3 little herbs of the mountains of Eu. and Cent. Asia, allied to Anemone, sometimes mentioned for outdoor planting. Lvs. radical (very small or none on the st.), decompound: fls. terminal, white or rose-color; sepals 5, deciduous; petals 5-15, showy, with nectaries at the base. The species apparently intergrade. C. anemonoides, Endl. Three to 10 in. high, blooming in spring: Ivs. as broad as long, triangular in outline, bipinnatifid: fls. 1½ in. or less across; sepals broad; petals narrow: rhizome somewhat fleshy. Tyrol. Useful in rockwork.