Persicaria dorofeevii Arbuzova (2006: 21)

Doweld, Alexander B., 2017, New names in Fallopia, Persicarioipollis, Polygonum and Reynoutria (Polygonaceae), living and fossil, Phytotaxa 308 (1), pp. 66-79 : 70

6. Persicaria dorofeevii Arbuzova (2006: 21) .

Type:— RUSSIAN FEDERATION. Bashkortostan, Staro-Barjatino (holotype, BIN 23/1- K 582 ( LE), figured by Arbuzova 2006: pl. 95, fig. 1).

–“ Polygonum pliocenicum ” in Dorofeev (1966: 204, pl. 2, figs 43–47; text-fig. 3: 12), nom. inval. (Art. 40.1).

–“ Polygonum pliocenicum ” in Dorofeev ex Velichkevich & Zastawniak (2003: 176), nom. inval. (Arts. 40.6–7), non Polygonum pliocaenicum Givulescu & Ţicleanu (1978: 47) .

Stratigraphy:— Pliocene.

Status:— Fruits.

IFPNI registration lsid:— 5959EE2F-E452-4B7A-8E07-3FFFFEDC5B2C

Note:— The fossil-species P. pliocenicum Dorofeev (1966: 204) , based on the fruits from the Pliocene sediments of the European part of Russia (Bashkortostan), was not validly published since no holotype was indicated (Art. 40.1) (see IFPNI: http://fossilplants.info/names/ 01E24836-0986-4AAD-9C20-7E70C5D39620). Later Velichkevich & Zastawniak (2003: 176) designated ‘lectotype’ for the specimen previously figured by Dorofeev (1966: pl. 2, fig. 45), but, though providing required description in English, they failed to provide the name of obligatory repository of the designated type of species (Art. 40.6). As a result, “ Polygonum pliocenicum “ Dorofeev (l.c.) was not validated by Velichkevich & Zastawniak (l.c.). Nevertheless, after establishing of the validly published Polygonum pliocaenicum Givulescu & Ţicleanu (1978: 47) , on the basis of fossil foliage from the Upper Miocene (Pannonian G / H) of Romania (see discussion above under Fallopia pliocaenica comb. nov.), the validation of the fossil fruit species with the same epithet from the Urals would be in any way a later homonym (illegitimate name). The correct species name for the fossil fruits currently known as “ Polygonum pliocenicum Dorofeev ”, which is still widely but not correctly accepted in palaeobotanical and geological literature on European palaeofloras as validly published in 1966 (see Mai & Walther 1988, von Bülow & Mai 1992, Velichkevich & Zastawniak (l.c.), Irace & al. 2015), is Persicaria dorofeevii Arbuzova (2006: 21) (see IFPNI: http://fossilplants.info/names/ 5959EE2F-E452-4B7A-8E07-3FFFFEDC5B2C).