Lysimachia monnieri Linnaeus, Centuria II Plantarum: 9. 1756. "Habitat in America meridionali. Hallman." RCN: 132. Basionym of: Gratiola monnieri (L.) L. (1759). Neotype (Cramer in Dassanayake & Fosberg, Revised Handb. Fl. Ceylon 3:421. 1981): [icon] "Moniera minima repens, foliis subrotundis, floribus singularibus alaribus" in Browne, Civ. Nat. Hist. Jamaica: 269, t. 28, f. 3. 1756. Current name: Bacopa monnieri (L.) Pennell (Scrophulariaceae). Note: Gratiola monnieri (L.) L. (1759) has been regarded as a new combination based on Lysimachia monnieri L. (1756) because the diagnoses of the two are essentially the same, and the latter does not appear in Syst. Nat., ed. 10, 2 (May–Jun 1759). Additionally, Linnaeus (in Amoen. Acad. 4: 306. Nov 1959) changed the name L. monnieri to G. “monnieria” in the reprint of the dissertation in which the former had originally appeared, as noted by Nordenstam (in Bot. Not. 114: 278. 1961). Linnaeus’ intention therefore seems clear. Cramer designated a Browne figure as type of G. monnieri. Although it was not cited in the synonymy of the basionym, there is no original material in existence so this choice is treated as a neotypification under Art. 9.8.

Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part L), pp. 610-650 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 649, DOI: 10.5281/zenodo.291971