Sabdariffa cuanzensis (Exell & Mendonça) Mwachala & R.L.Barrett 2025

Sabdariffa cuanzensis (Exell & Mendonça) Mwachala & R.L.Barrett View in CoL , comb. nov.

Hibiscus cuanzensis Exell & Mendonça in Exell, J. Bot . 74: 136 (1936). Type citation: ‘ Hab. Angola: Cuanza Norte, Pungo Adongo , near Cazella , fl. & fr. April , Welwitsch 5241 (Typus in Herb. Mus, Brit.); Calunda Mangue , Welwitsch 5241 (Herb. Mus, Brit.).’ Type : Angola: Cuanza Norte, district Pungo Adongo , near Cazella , Apr. 1857, F.M.J.Welwitsch 5241 (holo: BM 000645511 ; iso: LISU 206156 About LISU , MEL 2472896 View Materials ; probable iso: LISU 206155 About LISU , PRE 0282640 About PRE -0; possible iso: COI 00005055 About COI , G 00014195 , K 000240668 , P 06655943 ).

Descriptions and illustrations

Exell (1936, p. 136); Exell and Mendonça (1937, p. 167); Wilson (1999, p. 71, fig. 3a); Leistner (2008, p. 114).

Typification

Collections made by Welwitsch in Angola were grouped under species numbers and variously dispersed (see Albuquerque et al. 2009). In this case, two collections were clearly cited in the protologue of Hibiscus cuanzensis , both assigned the species number ‘Welwitsch 5241’. However, Exell and Mendonça (in Exell 1936, p. 136) were explicit that the collection from ‘near Cazella’ was the ‘Typus in Herb. Mus. Bot .’ and as there is only a single collection at BM matching these details, we accept this as a holotype despite the existence of uncited isotypes. This was also the conclusion of Exell and Mendonça (1937, p. 167) and Wilson (1999, p. 71). Two collections with a derived label ‘Distr. Pungo Andongo’ are likely isotypes but given the aggregation of collections by Welwitsch, we cannot be certain of this. Four specimens simply labelled ‘ Iter Angolense’ cannot be reliably assigned to a location, therefore these are listed above as possible isotypes. The specimens from ‘Calunda Mangue’, while constituting original material, are not type specimens.

Distribution

Cuanza Norte, Angola.