Notoceras bicorne Aiton (1789: 394) Notes on the nomenclatural types of Notoceras bicorne (Cruciferae) and its heterotypic synonyms Ferrer-Gallego, P. Pablo Laguna, Emilio Phytotaxa 2021 2021-04-12 496 2 195 200 47VGP Aiton (1789: 394) Aiton 394 1789 [136,556,532,559] Magnoliopsida Brassicaceae Notoceras Plantae Brassicales 2 197 Tracheophyta species bicorne  Concretely,  Erysimum bicornewas offered to the Kew Gardens by Francis Masson, it was brought from the Canary Islandsin 1778. Francis Masson (1741–1805) was a British plant collector and gardener at Kew. 1760s he travelled to London where he got a gardening job at Kew which was the directed by Sir Joseph Banks, i.e., as plant collector for Kew and working for Banks ( Fry 2013). Masson’s living plants went to Kew and his herbarium specimens (mainly) to Banks and now are preserved at BM, and duplicates of Masson’s collections are in several herbaria, e.g., BR, CGE, DBN, HAL, LD, LINN, MO, PH, UPS (incl. Thunberg herbarium) ( Stafleu & Cowan 1981: 361). No such specimen of this species from Masson’s collections and collected in Canary Islands, however, is present at K. The Royal Botanic Gardens at Kew had no herbarium in the 18th century. In addition, as indicated by Stafleu & Cowan (1976: 25)almost all typesof both editions of the Hortus kewensisare in the Banksian herbarium at BM (Banks herbarium). Fortunately, in the herbarium BM there is a relevant specimen of this author collected in Canary Islands in 1778, with barcode BM000583715. The sheet bears a well preserved specimen, four complete plants, with leaves, flowers and fruits, and a handwritten label: “Insula Canaria. Fr. Masson 1778”. The geographical locality “Insula Canaria” and the author “Fr. Masson” agrees with the locality and author given in the protologue. Therefore, this specimen is undoubtedly original material of  E. bicorneand it was used by Aiton for its description. We have not been able to locate any further original material in other herbaria (e.g., BR, CGE, DBN, G, HAL, LD, LINN, MO, PH, UPS) and possibly the specimen at BM is the only original material used by Aiton in the description of  N. bicorne. However, as we cannot exclude that there were more than one specimenof this taxon, we consider the specimen as the lectotypeof the name, admitting that the specimen might well be the holotype(see McNeill 2014). The specimen BM000583715 is well preserved and complete, and represents the traditional concept and current use of the name (see e.g., Ball 1964, Galán Cela 1993). This specimen was indicated as “type” of  N. bicorneby Jafri (1973: 194)“Type: Canary Island, Masson (BM) (see http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=250063814).