Order is a taxonomic rank fitting between class and family.
The Cucurbitales is an order of flowering plants. This order mostly belongs to tropical areas, with limited presence in subtropic and temperate regions. The order includes various shrubs and trees, together with many herbs and climbers. One of major characteristics of the Cucurbitales is the presence of unisexual flowers, mostly pentacyclic, with thick pointed petals (whenever present). The pollination is usually performed by insects, but wind pollination is also present.
↑Matthews M. L. and Endress P. K. (2004). Comparative floral structure and systematics in Cucurbitales (Corynocarpaceae, Coriariaceae, Tetramelaceae, Datiscaceae, Begoniaceae, Cucurbitaceae, Anisophylleaceae). Botanical Journal of the Linnean Society 145(2), 129-185.