(2816) Proposal to conserve the name Echinocactus williamsii Lem. ex Salm-Dyck (Lophophora williamsii) against E. williamsianus Lem. (Cactaceae)

Hofer, A

Hofer, A (corresponding author), Jensstr 11, CH-3252 Worben, Switzerland.

TAXON, 2021; 70 (3): 676