Typification of Aristolochia saccata and Nomenclatural Notes for A. dilatata (Aristolochiaceae)

Tetsuo Ohi-Toma; Jin Murata; Nobuyuki Tanaka

doi:10.3417/2025923

Tetsuo Ohi-Toma Okayama University of Science
Jin Murata University of Tokyo
Nobuyuki Tanaka National Museum of Nature and Science

DOI: https://doi.org/10.3417/2025923

Keywords: Aristolochia, Aristolochiaceae, Himalayas, lectotype, Nathaniel Wallich, nomenclature

Abstract

A specimen collected from Nepal in 1821 by Wallich (2707.B in the Wallich Catalogue), stored at the Herbarium of the Royal Botanic Gardens Kew (K), is designated here as the lectotype of Aristolochia saccata Wall. In addition, the nomenclature for A. saccata var. dilatata Hook. f., A. dilatata N. E. Br., and Isotrema dilatatum (N. E. Br.) X. X. Zhu, S. Liao & J. S. Ma is considered. Since the name A. dilatata is based on A. saccata var. dilatata Hook. f., it is regarded that I. dilatatum was validly published as a new combination based on A. saccata var. dilatata Hook. f., and the correct author citation is “(Hook. f.) X. X. Zhu, S. Liao & J. S. Ma.”