Boykinia Nuttall sect. Peltoboykinia Engler in Engler & Prantl, Nat. Pflanzenfam., ed. 2, 18a: 120. 1930.

Herbs perennial. Rhizomes spreading, short, thick. Leaves alternate, simple. Basal leaves long petiolate, peltate or orbicular-cordate, large, palmately lobed; stipules membranous. Cauline leaves few, similar to basal ones but much smaller. Inflorescence cymose; bracts small. Hypanthium proximally adnate to ovary. Sepals 5. Petals 5, yellowish, margin usually sparsely denticulate. Stamens 10. Carpels 2, connate; ovary 1/2 subinferior, 2-loculed; placentation axile; ovules numerous; styles 2, free. Fruit a capsule. Seeds numerous, small, tuberculate.

This genus is most closely related to Chrysosplenium.

Two species: China, Japan; one species in China.

(Authors: Pan Jintang ; Douglas E. Soltis)