Resumo

MCKENZIE, Robert J.  e  HELME, Nick A.. Arctotis gazanioides (Asteraceae: Arctotideae), a new species from the Bokkeveld Plateau, Northern Cape Province, South Africa. Bothalia (Online) [online]. 2022, vol.52, n.1, pp.1-8. ISSN 2311-9284.  http://dx.doi.org/10.38201/btha.abc.v52.i1.10.

BACKGROUND: A taxonomic revision of Arctotis L. (Asteraceae) is ongoing. A previous botanical survey of the Avontuur Nature Reserve on the Bokkeveld Plateau, Northern Cape, located a potentially unnamed Arctotis taxon associated with seasonally wet sites. OBJECTIVES: To compare the morphology of the Arctotis from the Avontuur Nature Reserve with morphologically comparable species of Arctotis and to determine its taxonomic status. METHOD: The morphology of fresh collections, herbarium specimens, and relevant type material was examined. All relevant literature was consulted. RESULTS: The Avontuur Arctotis is morphologically distinct from A. acaulis L. var. acaulis, A. acaulis var. undulata DC. and A. verbascifolia Harv. CONCLUSION: Arctotis gazanioides R.J.McKenzie & Helme is described as a new species distinguished by its branching rhizomatous root system with abundant fibrous adventitious roots, and discolorous leaves that are simple lanceolate, lanceolate-ovate to lanceolate-elliptic, or pinnatisect with a lanceolate to lanceolate-elliptic terminal lobe.

Palavras-chave : Asteraceae; Arctotidinae; Arctotis gazanioides; new species; South Africa; morphology; taxonomy.

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