Science, Biology, Flora and Fauna, Plantae - University of Nijmegen: Botanical and Experimental Garden. Holds the Dutch national collection of plants in the Solanaceae family.
Science, Biology, Flora and Fauna, Plantae - Gymnosperm Database. Basic information (sometimes only a name) for all species and higher-ranked taxa of the gymnosperms, including conifers, cycads, and their allies.
Science, Biology, Flora and Fauna, Plantae - PLANTS National Database. Online USDA database of information, images, and links on plants in the USA, including crops and invasives.
Science, Biology, Flora and Fauna, Plantae - Arboretum de Villardebelle. Includes photographs and information on conifers from around the world, gymnosperm taxonomy, and scientific articles.
Science, Biology, Flora and Fauna, Plantae - African Blackwood Conservation Project. Aims to help replenish the tree Dalbergia melanoxylon in Tanzania.