Luehea divaricata Martius (1826: 101). Type:— BRAZIL. São Paulo: “ Habitat inter sepes et in collius apricis prope Ytu et Pendamonhangaba ”, Martius s.n. (lectotype [as ‘holotype’], first-step designated by Cunha (1985: 29); second-step lectotype, designated here, M! [M0210165]; isolectotypes M! [M0210178]). In the protologue only Herbarium Munich (M) and Herbarium Zuccarini are mentioned (Martius 1826, Stafleu & Cowan 1976 –1988: 325). Cunha (1985) indicated holotype (M), but without having seen it or specifying its identification number. Consequently, this designation must be corrected as lectotype and as a first-step typification (Art. 9.17 of the ICN). Two specimens of Martius s.n. (L. divaricata) are in Herbarium M based on data found on the label. In accordance with Arts. 9.3 and 9.4 of the ICN, we herein designate specimen (M0210165) as a second-step lectotype by choosing the best-preserved specimen congruent with the protologue’s description. Another three specimens of Martius s.n. (M0210175, M0210179, M0210180) are also found in M; however, no evidence, including label data, indicates that they are duplicates of the lectotype herein designated. The exsiccate (M0210176) is only a reproduction of Figure 63 from Martius’ work. Based on Cunha (1985) and the present study, the application of the name L. divaricata is confirmed as an accepted species.

Published as part of Gerace, Samuele, Bovini, Massimo G., Peruzzi, Lorenzo & Baumgratz, José Fernando A., 2022, Typification of names in the neotropical genus Luehea (Malvaceae: Grewioideae), pp. 180-188 in Phytotaxa 542 (2) on page 182, DOI: 10.11646/phytotaxa.542.2.5, http://zenodo.org/record/6415980