Between 1778 and 1903, three successive generations of the Wendland family were Court Gardeners at the Royal Gardens of Herrenhausen, Hanover, Germany. In addition to their horticultural responsibilities, they published several important taxonomic accounts, some involving Australian plants. Johann Christoph Wendland (1755–1828) (J.C.Wendl.) established the endemic Australian genera Angianthus J.C.Wendl. (Asteraceae), Hakea Schrad. & J.C.Wendl. (Proteaceae) and Waitzia J.C.Wendl. (Asteraceae), and provided novel work on Melaleuca L. (Myrtaceae) and Acacia Mill. (as Mimosa L; Fabaceae); Heinrich Ludolph Wendland (1792–1869) (H. L.Wendl.) provided novel and revisionary work on Acacia and Leptospermum J.R.Forst. & G.Forst. (Myrtaceae); and Hermann Wendland (1825–1903) (H. Wendl.) specialised in the palms (Arecaceae) and wrote Palmae Australasicae with Oscar Drude, the foundational work on Australian palms. A search of all the databases and other references accessible to us has resulted in the identification of ∼148 names of Australian plants in which the author citation includes any of the three Wendlands. Of these, ∼30 are the currently accepted names. Lectotypes are here proposed for the names Acacia amoena H.L.Wendl., A. crassiuscula H.L.Wendl., A. dolabriformis H.L.Wendl., A. emarginata H.L.Wendl., A. homomalla H.L.Wendl., Aster tomentosus J.C.Wendl., Leptospermum buxifolium H.L.Wendl., L. emarginatum H.L.Wendl. ex Link, L. glomeratum H.L.Wendl., Melaleuca linearis Schrad. & J.C.Wendl., M. thea Schrad. & J.C.Wendl., Passiflora glabra J.C.Wendl., Protea nectarina J.C.Wendl., P. pulchella Schrad. & J.C.Wendl., Pultenaea daphnoides J.C.Wendl., P. linophylla Schrad. & J.C.Wendl., P. retorta J.C.Wendl. and Tristania subverticillata H.L.Wendl. Figures are provided of all the proposed lectotypes housed in GOET.