Flora of North America North of Mexico Volume 6 - Magnoliophyta: Cucurbitaceae to Droseraceae - includes treatments prepared by 36 authors covering 545 species in 104 genera classified in 19 families. Among the families treated in this volume, the largest are Malvaceae (250 species), Violaceae (78), Hypericaceae (58), Cucurbitaceae (56), Cistaceae (40), and Passifloraceae (18). Descriptions for all of the families, genera, and species are provided plus occurrence maps for species are included and 28% of the species are illustrated. Keys are included to aid in the identification of genera in families and species within the genera. Volume 6 is the nineteenth volume to be published in the planned 30-volume Flora of North America North of Mexico series.