Solanum tweedieanum Hook., Bot. Mag. 62: tab. 3385. 1835, as " Tweedianum"

Knapp, Sandra, Chiarini, Franco, Cantero, Juan J. & Barboza, Gloria E., 2020, The Morelloid clade of Solanum L. (Solanaceae) in Argentina: nomenclatural changes, three new species and an updated key to all taxa, PhytoKeys 164, pp. 33-66 : 33

Solanum tweedieanum Hook., Bot. Mag. 62: tab. 3385. 1835, as " Tweedianum" Fig. 1D-F

Solanum atriplicifolium Gillies ex Nees, Nov. Act. Acad. Caes. Leop. 19, Suppl. 1: 386. 1843. Type. Argentina. Mendoza: El Diamante, [no date], J. Gillies s.n. (lectotype, designated by Barboza et al. 2013, pg. 239): E [E00112916]; isolectotypes: E [E00057545], K[K000585737], NY [00139057]).

Solanum haarupii Bitter, Repert. Spec. Nov. Regni Veg. 11: 210. 1912. Type. Argentina. Mendoza: Estancia Santa Rosa, 1904, A.C. Jensen-Haarup s.n. (holotype: UPS; isotype: US [00027594, acc. # 1081085]).

Solanum meizonanthum Bitter, Repert. Spec. Nov. Regni Veg. 11: 214. 1912. Type. Argentina. Entre Ríos: Paraná, 16 Aug 1892, G. Niederlein 270 (holotype: B [destroyed, F neg. 2783]; lectotype, designated here: F [V0361924F, acc. # 621142]).

Solanum atriplicoides Herter, Rev. Sudamer. Bot. 7: 226. 1943, nom. illeg. superfl. Type. Based on Solanum atriplicifolium Gillies ex Nees

Type.

Cultivated at the Glasgow Botanical Garden [protologue] from seeds sent by J. Tweedie from "near Buenos Ayres", Anon. s.n. (lectotype, designated by Edmonds 1972, pg. 102 [as “holotype”], second step designated here: K [K000585739]; isolectotype: K [K000585738]).

Distribution.

Bolivia and Argentina.

Notes.

Edmonds (1972) stated that the holotype of S. tweedieanum was held at K; Barboza et al. (2013) repeated this citation but added reference to a single sheet (K000585739). This is not effective lectotypification under Art. 9.23 of the Code ( Turland et al. 2018). The specimen cited as holotype by Barboza et al. (2013) and selected as lectotype here (K000585739) has open flowers and several buds and is a better match for the illustration in the protologue than the other sheet at Kew (K000585738); both specimens are annotated "S. Tweedianum Hook./Bos. Ayres. Cult." in W.J. Hooker’s handwriting and bear the herbarium stamp "Herbarium Hookerianum/1867" indicating they come from Hooker’s own herbarium. There is no evidence on the specimens themselves that they were taken from the plants cultivated in Glasgow mentioned in the protologue, nor that they were collected prior to 1835; but the top part of the stem mounted on the sheet we have selected as the lectotype at Kew (K000585739, https://plants.jstor.org/stable/pdf/10.5555/al.ap.specimen.k000585739) is an excellent (mirror-image) match for Tab. 3385 in the protologue ( Hooker 1835; see https://www.biodiversitylibrary.org/item/14341#page/36/mode/1up) suggesting it does represent original material. The original, and all subsequent, spelling of the name was “Tweedianum” where John Tweedie’s name was implicitly latinized as “Tweedius” in which the terminal vowel was eliminated. This is not acceptable under Art. 60.9(a)(1) of the Code ( Turland et al. 2018) and the name should be formed as " tweedieanum " (e.g., Art. 60.9, Ex. 31, Turland et al. 2018).

Figures

Figure 1. Solanum hunzikeri Chiarini & Cantero (A-C) compared to S. tweedieanum Hook. (D-F) and S. physalidicalyx Bitter (G-I) A habit (Barboza et al. 4763) B calyx morphology of developing fruits (Barboza et al. 4763) C leaf from mature stem (Barboza et al. 4763) D habit (Barboza et al. 3496) E calyx morphology of developing fruits (Barboza et al. 4798) F leaf from mature stem (Barboza et al. 4798) G habit (Barboza et al. 3983) H calyx morphology of developing fruits (Barboza et al. 3983) I leaf from mature stem (Barboza et al. 3983). Photos A-C, E, F by M. Gritti, D by S. Knapp, G-I by G. E. Barboza.