Stillingia trapezoidea Ule (1909: 223)

Mariaathiê-Souza, Sarah, Melo, André Laurênio De, Silva, Marcos José Da & Sales, Margareth Ferreira De, 2016, New synonyms and typifications of Stillingia (Euphorbiaceae), Phytotaxa 266 (3), pp. 183-194 : 192

21. Stillingia trapezoidea Ule (1909: 223) . Type :— BRAZIL. Piauí: in der catinga in der Serra Branca, January 1907, E. H. G. Ule 7160 (holotype B, destroyed [photo in F!, MICH!, MO!, NY!, US! ex B]; lectotype HBG 515801! here designated, isolectotypes GH!, K 000600947!, L 0022731!) .

Stillingia trapezoidea was established by Ule (1909), based on Ule 7160. Although photographs of this material at B (where the main collections of Ule were preserved) are deposited in five herbaria, the specimen was not found in this herbarium and is probably lost. However, other herbaria hold duplicates of this collection. Therefore, HBG 515801 is chosen as the lectotype because it is a herbarium holding a major set of Ule collections ( Stafleu & Cowan 1983), and also because it is in good condition and in accordance with the protologue.