Veronica michauxii Lam.

Tableau encyclopédique et méthodique des trois règnes de la nature 1: 47 (Lamarck 1791). — V. anagallis-aquatica subsp. michauxii (Lam.) Elenevsky, Byulleten’ Moskovskogo Obshchestva Ispytatelei Prirody Otdel Biologicheskii 74 (6): 77 (Elenevsky 1969).

TYPE CITATION. — Iran, Hamadan: “Ex oriente, ad aquas montis Elvend”, A. Michaux.

LECTOTYPE (designated here). — P-Lam[P00358024*].

Nomenclatural note. Material sent by Michaux is said to be grown in the Royal Botanic Gardens in Paris. The specimen of V. michauxii in the Lamarck herbarium (P-LAM[P00358024]) is certainly original material, whereas the specimen in the general herbarium P (P04023177) from the herbarium Durand, bearing a label from 1969 that it may be type material, does not show any sign that Lamarck has seen it. Genetic and morphological studies on V. anagallis-aquatica and putative relatives in Iran recently demonstrated that V. michauxii is a variety, which can occur intermixed with other varieties within the same populations (Hosseinnejad Azad et al. 2020, 2021). However, in the light of ongoing phylogenetic analyses, which make it likely to differentiate between a European species ( V. anagallis-aquatica s.str.) and species of the Near East, for which the earliest available name is V. michauxii, I refrain from making nomenclatural changes.