Amalocalyx microlobus Pierre ex Spire
Contr. Apocyn.: 93 (1905).
LECTOTYPE. — Spire 24 (P), Laos, Xieng Khouang, Khe-kian, designated by L´y, Feddes Repert. 97: 661 (1986).
Second step lectotypification, designated here (there were four undifferentiated specimens of Spire 24 at P).