The contributions made by Flávio Ferreira Pinto de Resende (1907–1967), who, for most of his career, was based at the University of Lisbon, in Lisbon, Portugal, to succulent plant research in the mid-1900s, especially in the Asphodelaceae subfam. Alooideae and Crassulaceae, are recorded and discussed. Biographical information on Resende is provided, as well as a bibliography of a large selection of his publications, especially on succulents. The nomenclatural novelties he described are tabulated with an indication of their current taxonomic status. Aloe striatula Haw. f. conimbricensis Resende, which dates from 1943, is typified and formally synonimised under Aloiampelos striatula var. caesia (Reynolds) Klopper & Gideon F.Sm. The nothospecies name Haworthiopsis ×coarctatoides Resende & Viveiros ex Gideon F.Sm. & Vasc.Silva is published.