Clarifying the nomenclature of non‐Andean South American Hypericum (Hypericaceae)

Abstract

AbstractAn updated taxonomic and nomenclatural framework is essential to develop most biological research. To stabilize the application of Hypericum names and avoid future problems, we critically reviewed the protologues, the main Floras in which the studied names are listed, and the types of 84 names described for non‐Andean South America (Argentina, Brazil, Paraguay, Uruguay). Application of the term holotype is corrected to lectotype for 18 names, and type is corrected to lectotype for six names (“inadvertent lectotypifications”). For H. nudicaule the term type is corrected to neotype, for H. paraguense the term lectotype is corrected to neotype, and for H. polyanthemum the term isotype is corrected to neotype (“inadvertent neotypifications”). For 24 names, lectotypifications are provided, including one re‐lectotypification (H. brasiliense var. angustifolium) and 19 second‐step lectotypifications. Neotypes are designated for four names (H. cyathifolium, H. lorentzianum, H. meridionale, H. sellowianum). Five new synonyms are proposed (H. campestre subsp. pauciflorum, H. campestre subsp. tenue, H. rigidum subsp. bracteatum, H. rigidum subsp. meridionale, H. rigidum subsp. sellowianum), and two superfluous names are detected for the first time (H. bolivianum, H. connatum var. obscurum).