Leeuwenb. 1965 - Leeuwenberg AJM (1965) THE LOGANIACEAE OF AFRICA VII. STRYCHNOS II1). Acta Botanica Neerlandica 14(2): 218-229. doi: 10.1111/j.1438-8677.1965.tb00190.x.
There is no corrections for Strychnos urceolata yet.