The relationship between Anisosperma and Fevillea (Cucurbitaceae), and a new species of Fevillea from Bolivia.

Abstract We describe and illustrate the new species Fevillea anomalosperma from the semideciduous forests of northwestern Bolivia. Analysis of chloroplast DNA sequences representing most genera of Cucurbitaceae, including Fevillea with four of its seven species, supports placing the new species in Fevillea despite its small (10–11.5 × 7.5–10 mm, 2–3 mm thick), flattened, and highly sculptured seeds, which are unusual in the genus. The molecular phylogeny also revealed that the recent sinking of the monotypic genus Anisosperma into Fevillea is not justified.