Isopyrum aquilegioides Linnaeus, Species Plantarum 1: 557. 1753. "Habitat in Alpibus Helveticis, Tridentinis, Apenninis." RCN: 4105. Lectotype (Nardi in Webbia 47: 219. 1993): [icon] "Aquilegia parvo flore Thalictri folio" in Morison, Pl. Hist. Univ. 3: 458, s. 12, t. 1, f. 5. 1699. Current name: Isopyrum thalictroides L. (Ranunculaceae). Note: De Beer & Stearn (in Bull. Brit. Mus. (Nat. Hist.), Bot. 2: 200, f. 3. 1960) designated Herb. Burser VII (1): 109 (UPS), a specimen of Aquilegia, as lectotype. Nardi (in Webbia 47: 219-221. 1993) argued that the Burser material was not original material for the name - Linnaeus (in ms.) determined it as an Aquilegia and it shows no characters of Isopyrum. Nardi therefore treated the choice as a neotypification, which he rejected (as original material was in existence) in favour of the cited Morison illustration. The consequence of this is that I. aquilegioides is a synonym of I. thalictroides L.

Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part I), pp. 586-598 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 596, DOI: 10.5281/zenodo.291971