(2979) Proposal to conserve the name <i>Ranunculus isthmicus</i> against <i>R. schowii</i> (<i>Ranunculaceae</i>)

(2979) Ranunculus isthmicus Boiss., Diagn. Pl. Orient. 6: 4. Jul 1846 [Angiosp.: Ranuncul.], nom. cons. prop. Lectotypus (hic designatus): [Greece], Corinthus, Apr 1842, Boissier (G barcode G00390573 [photo!]; isolectotypi: G G00390574 [photo!], JE barcodes JE00021559 [photo!] & JE00021560 K K000675357 K000675358 K000675360 [photo!]). (=) schowii Tineo in Gussone, Fl. Sicul. Syn. 2: 889. Jan–Sep 1845, rej. [Italy, Sicily], “Ranunculus schouwii Tin., fra Vittoria e Terranova, Schow” (PAL No. 45282!). was described by Vincenzo Gussone (Fl. 1845) providing a detailed description, quoting precise collection locality “In arvis arenosis: Terranova (Tin.)” and citing an unpublished illustration “Tin. ined.”. The name typified Bartolucci al. (in Plants (Switzerland) 11: 3094. 2022) with the (NAP NAP0000512) cited protologue considering that no herbarium specimens referable to original material had been found. Further research carried out February 2023 Herbarium Mediterraneum Panormitanum (PAL), where Tineo's main is housed, allowed us trace one syntype (Art. 9.6 of ICN, Turland Regnum Veg. 159. 2018) labelled “Majo | Tin. 45282). NAP0000512 based on this sample. lectotype designation (l.c. not conformity Art. 9.12 must be followed. So we designate above specimen PAL 45282 as lectotype. study lectotype, previously possible when solely available, clearly shows R. applies taxon currently known Boiss. s.str., South Mediterranean species distributed North Africa, Sicily, Greece, Turkey (e.g., Cook Tutin al., Eur., ed. 2, 1: 278. 1993; Strid Tan, Hellen. 51. 2002; Pignatti Ital., 849. 2017; Biosyst. 152: 179–303. 2018). (Diagn. Orient., ser. 1, 1846), description “Habitat declivibus Isthmi Corinthiaci paulo supra Calamathi ad Corinthum eundo, legi floriferum fructiferumque ineunte Aprili 1842” “R. orientalis pl. exs. Grecia non L.”. This name, best our knowledge, has yet typified. We were able some housed G, JE, which can considered 9.4). All are complete, well conserved, agree protologue, only labels slightly different: “Isthmus Corianthiacus arenosis, s.n.” (K K000675360); “Corinthus, G00390574, JE00021560, K000675358). Among duplicate above, select sample kept (barcode G00390573) for isthmicus. Hörandl Raab-Straube (Euro+Med PlantBase. 2015–, http://ww2.bgbm.org/EuroPlusMed/, accessed 29 Mar 2023), World Online [POWO] (https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:713783-1, 2023) Flora [WFO] (https://wfoplantlist.org/plant-list/, synonym monspeliacus L. Some Italian authors regarded it dubious gracilis E.D. Clarke (Fiori, Nuov. Italia 641–800. 1924; Giardina Bocconea 20: 5–582. 2007). Only recently discussed synonymy Considering data, actually later schowii. However, widely accepted used all standard Euro-Mediterranean floras, checklists taxonomic database Davis, 185–186. 1965; Greuter Med-Checkl. 4: 432. 1989; l.c.; Fennane Ibn Tattou, Vasc. Maroc 331. 2005; l.c. 2018; Raab-Straube, African Plant Database, https://africanplantdatabase.ch/en/nomen/specie/152131/ranunculus-isthmicus-boiss, 2023, POWO, WFO, l.c.). In contrast, long-misintepreted adopted current literature. To demonstrate further, Google Scholar search March returned 139 articles isthmicus” 1 schowii”. Hence, propose conserve against because think decision would serve nomenclatural stability allow continuation use well-established Rejection present proposal have undesirable consequences also two new combinations subsp. stepporum” tenuifolius” needed stepporum P.H. Davis Notes Roy. Bot. Gard. Edinburgh 23: 151. 1960) tenuifolius (Steven) (l.c.: 152). FB, https://orcid.org/0000-0001-8199-6003 GD, https://orcid.org/0000-0003-4184-398X FC, https://orcid.org/0000-0001-7391-6691 gratefully acknowledge Directors Curators consulted herbaria. funded “Progetto di Ricerca Rilevante Interesse Nazionale” (PRIN) “PLAN.T.S 2.0—towards renaissance PLANt Taxonomy Systematics” led University Pisa, grant number 2017JW4HZK.