Rosales is an order of flowering plants. It is sister taxon to a clade consisting of Fagales and Cucurbitales. The basal clade consists of the family Rosaceae; another clade consists of four families, including Rhamnaceae; and the third clade consists of the four urticalean families. The order Rosales is strongly supported as monophyletic in phylogenetic analyses of DNA sequences.

The anthophytes are a grouping of plant taxa bearing flower-like reproductive structures. They were formerly thought to be a clade comprising plants bearing flower-like structures. The group contained the angiosperms - the extant flowering plants, such as roses and grasses - as well as the Gnetales and the extinct Bennettitales.

23,420 species of vascular plant have been recorded in South Africa, making it the sixth most species-rich country in the world and the most species-rich country on the African continent. Of these, 153 species are considered to be threatened. Nine biomes have been described in South Africa: Fynbos, Succulent Karoo, desert, Nama Karoo, grassland, savanna, Albany thickets, the Indian Ocean coastal belt, and forests.

The 2018 South African National Biodiversity Institute's National Biodiversity Assessment plant checklist lists 35,130 taxa in the phyla Anthocerotophyta (hornworts (6)), Anthophyta (flowering plants (33534)), Bryophyta (mosses (685)), Cycadophyta (cycads (42)), Lycopodiophyta (Lycophytes(45)), Marchantiophyta (liverworts (376)), Pinophyta (conifers (33)), and Pteridophyta (cryptogams (408)).

Six families are represented in the literature. Listed taxa include species, subspecies, varieties, and forms as recorded, some of which have subsequently been allocated to other taxa as synonyms, in which cases the accepted taxon is appended to the listing. Multiple entries under alternative names reflect taxonomic revision over time.

Cannabaceae Family: Cannabaceae,

Cannabis Genus Cannabis: Cannabis sativa L. not indigenous, naturalised Cannabis sativa L. var. indica (Lam.) Wehmer, not indigenous, naturalised Cannabis sativa L. var. sativa, not indigenous, naturalised Cannabis sativa L. var. spontanea Vavilov, not indigenous, naturalised

Celtis Genus Celtis: Celtis africana Burm.f. indigenous Celtis australis L. not indigenous, cultivated, naturalised, invasive Celtis gomphophylla Baker, indigenous Celtis mildbraedii Engl. indigenous Celtis sinensis Pers. not indigenous, cultivated, naturalised, invasive

Chaetachme Genus Chaetachme: Chaetachme aristata Planch. indigenous

Trema Genus Trema: Trema orientalis (L.) Blume, indigenous

Moraceae Family: Moraceae,

Ficus Genus Ficus: Ficus abutilifolia (Miq.) Miq. indigenous Ficus bizanae Hutch. & Burtt Davy, endemic Ficus bubu Warb. indigenous Ficus burkei (Miq.) Miq. indigenous Ficus burtt-davyi Hutch. indigenous Ficus caffra (Miq.) Miq. var. longipes Warb. accepted as Ficus ingens (Miq.) Miq. present Ficus caffra (Miq.) Miq. var. natalensis Warb. accepted as Ficus ingens (Miq.) Miq. present Ficus capreifolia Delile, indigenous Ficus carica L. not indigenous, cultivated, naturalised, invasive Ficus cordata Thunb. indigenous Ficus cordata Thunb. subsp. cordata, indigenous Ficus cordata Thunb. subsp. salicifolia (Vahl) C.C.Berg, accepted as Ficus salicifolia Vahl, present Ficus cordata Thunb. var. fleckii Warb. accepted as Ficus cordata Thunb. subsp. cordata Ficus cordata Thunb. var. marlothii Warb. accepted as Ficus cordata Thunb. subsp. cordata Ficus craterostoma Warb. ex Mildbr. & Burret, indigenous Ficus damarensis Engl. accepted as Ficus sycomorus L. subsp. gnaphalocarpa (Miq.) C.C.Berg Ficus durbanii Warb. accepted as Ficus natalensis Hochst. subsp. natalensis, present Ficus glumosa Delile, indigenous Ficus guerichiana Engl. accepted as Ficus ilicina (Sond.) Miq. Ficus hippopotami Gerstner, accepted as Ficus trichopoda Baker, present Ficus ilicina (Sond.) Miq. indigenous Ficus ingens (Miq.) Miq. indigenous Ficus ingens (Miq.) Miq. var. ingens, indigenous Ficus lingua De Wild. & T.Durand, indigenous Ficus lingua De Wild. & T.Durand subsp. depauperata (Sim) C.C.Berg, indigenous Ficus lutea Vahl, indigenous Ficus macrophylla Desf. ex Pers. not indigenous, cultivated, naturalised, invasive Ficus natalensis Hochst. indigenous Ficus natalensis Hochst. subsp. graniticola J.E.Burrows, indigenous Ficus natalensis Hochst. subsp. natalensis, indigenous Ficus natalensis Hochst. var. latifolia Warb. accepted as Ficus natalensis Hochst. subsp. natalensis, present Ficus natalensis Hochst. var. puberula Warb. accepted as Ficus burkei (Miq.) Miq. present Ficus petersii Warb. indigenous Ficus phillipsii Burtt Davy & Hutch. accepted as Ficus burkei (Miq.) Miq. present Ficus polita Vahl, indigenous Ficus polita Vahl subsp. polita, indigenous Ficus salicifolia Vahl, indigenous Ficus sansibarica Warb. indigenous Ficus sansibarica Warb. subsp. sansibarica, indigenous Ficus soldanella Warb. accepted as Ficus abutilifolia (Miq.) Miq. present Ficus stuhlmannii Warb. indigenous Ficus sur Forssk. indigenous Ficus sycomorus L. indigenous Ficus sycomorus L. subsp. gnaphalocarpa (Miq.) C.C.Berg, indigenous Ficus sycomorus L. subsp. sycomorus, indigenous Ficus tettensis Hutch. indigenous Ficus thonningii Blume, indigenous Ficus tremula Warb. subsp. tremula, indigenous Ficus trichopoda Baker, indigenous Ficus verruculosa Warb. indigenous

Maclura Genus Maclura: Maclura africana (Bureau) Corner, indigenous

Morus Genus Morus: Morus alba L. not indigenous, naturalised, invasive Morus alba L. var. alba, not indigenous, naturalised Morus japonica Audib. not indigenous, naturalised Morus mesozygia Stapf ex A.Chev. indigenous

Sycomorus Genus Sycomorus: Sycomorus hirsuta Sond. accepted as Ficus glumosa Delile, present

Trilepisium Genus Trilepisium: Trilepisium madagascariense DC. indigenous

Rhamnaceae Family: Rhamnaceae,

Berchemia Genus Berchemia: Berchemia discolor (Klotzsch) Hemsl. indigenous Berchemia zeyheri (Sond.) Grubov, indigenous

Colubrina Genus Colubrina: Colubrina nicholsonii A.E.van Wyk & Schrire, endemic

Helinus Genus Helinus: Helinus integrifolius (Lam.) Kuntze, indigenous Helinus spartioides (Engl.) Schinz ex Engl. indigenous

Lasiodiscus Genus Lasiodiscus: Lasiodiscus pervillei Baill. indigenous Lasiodiscus pervillei Baill. subsp. pervillei, indigenous

Noltea Genus Noltea: Noltea africana (L.) Endl. endemic

Phylica Genus Phylica: Phylica abietina Eckl. & Zeyh. endemic Phylica acmaephylla Eckl. & Zeyh. endemic Phylica aemula Schltr. indigenous Phylica aemula Schltr. var. aemula, endemic Phylica aemula Schltr. var. multibracteolata Pillans, endemic Phylica affinis Sond. endemic Phylica agathosmoides Pillans, endemic Phylica alba Pillans, endemic Phylica alpina Eckl. & Zeyh. endemic Phylica alticola Pillans, endemic Phylica altigena Schltr. endemic Phylica ambigua Sond. endemic Phylica amoena Pillans, endemic Phylica ampliata Pillans, endemic Phylica anomala Pillans, endemic Phylica apiculata Sond. endemic Phylica atrata Licht. ex Roem. & Schult. endemic Phylica axillaris Lam. indigenous Phylica axillaris Lam. var. axillaris, endemic Phylica axillaris Lam. var. cooperi Pillans, endemic Phylica axillaris Lam. var. densifolia Pillans, endemic Phylica axillaris Lam. var. gracilis Pillans, endemic Phylica axillaris Lam. var. hirsuta Sond. endemic Phylica axillaris Lam. var. lutescens (Eckl. & Zeyh.) Pillans, endemic Phylica axillaris Lam. var. maritima Pillans, endemic Phylica axillaris Lam. var. microphylla (Eckl. & Zeyh.) Pillans, endemic Phylica axillaris Lam. var. pulchra Pillans, endemic Phylica barbata Pillans, endemic Phylica barnardii Pillans, endemic Phylica bolusii Pillans, endemic Phylica brachycephala Sond. endemic Phylica brevifolia Eckl. & Zeyh. endemic Phylica burchellii Pillans, endemic Phylica buxifolia L. endemic Phylica calcarata Pillans, endemic Phylica callosa L.f. endemic Phylica cephalantha Sond. endemic Phylica chionocephala Schltr. endemic Phylica chionophila Schltr. endemic Phylica comosa Steud. endemic Phylica comptonii Pillans, endemic Phylica confusa Pillans, endemic Phylica constricta Pillans, indigenous Phylica constricta Pillans var. constricta, endemic Phylica constricta Pillans var. staavioides Pillans, endemic Phylica costata Pillans, endemic Phylica cryptandroides Sond. endemic Phylica curvifolia Pillans, endemic Phylica cuspidata Eckl. & Zeyh. indigenous Phylica cuspidata Eckl. & Zeyh. var. cuspidata, endemic Phylica cuspidata Eckl. & Zeyh. var. minor Pillans, endemic Phylica cylindrica J.C.Wendl. endemic Phylica debilis Eckl. & Zeyh. indigenous Phylica debilis Eckl. & Zeyh. var. debilis, endemic Phylica debilis Eckl. & Zeyh. var. fourcadei Pillans, endemic Phylica diffusa Pillans, indigenous Phylica diffusa Pillans var. burchellii Pillans, endemic Phylica diffusa Pillans var. diffusa, endemic Phylica dioica L. endemic Phylica diosmoides Sond. endemic Phylica disticha Eckl. & Zeyh. indigenous Phylica disticha Eckl. & Zeyh. var. cuneata Pillans, endemic Phylica disticha Eckl. & Zeyh. var. disticha, endemic Phylica dodii N.E.Br. endemic Phylica elimensis Pillans, endemic Phylica ericoides L. indigenous Phylica ericoides L. var. ericoides, endemic Phylica ericoides L. var. montana Pillans, endemic Phylica ericoides L. var. muirii Pillans, endemic Phylica ericoides L. var. pauciflora Pillans, endemic Phylica ericoides L. var. zeyheri Pillans, endemic Phylica excelsa J.C.Wendl. indigenous Phylica excelsa J.C.Wendl. var. excelsa, endemic Phylica excelsa J.C.Wendl. var. papillosa (J.C.Wendl.) Sond. endemic Phylica floccosa Pillans, endemic Phylica floribunda Pillans, endemic Phylica fourcadei Pillans, endemic Phylica fruticosa Schltr. endemic Phylica galpinii Pillans, endemic Phylica glabrata Thunb. endemic Phylica gnidioides Eckl. & Zeyh. endemic Phylica gracilis (Eckl. & Zeyh.) D.Dietr. endemic Phylica greyii Pillans, endemic Phylica guthriei Pillans, endemic Phylica harveyi (Arn.) Pillans, endemic Phylica hirta Pillans, endemic Phylica humilis Sond. endemic Phylica imberbis P.J.Bergius, indigenous Phylica imberbis P.J.Bergius var. eriophoros (P.J.Bergius) Pillans, endemic Phylica imberbis P.J.Bergius var. imberbis, endemic Phylica imberbis P.J.Bergius var. secunda Sond. endemic Phylica incurvata Pillans, endemic Phylica insignis Pillans, endemic Phylica intrusa Pillans, endemic Phylica karroica Pillans, endemic Phylica keetii Pillans, indigenous Phylica keetii Pillans var. keetii, endemic Phylica keetii Pillans var. mollis Pillans, endemic Phylica lachneaeoides Pillans, endemic Phylica laevifolia Pillans, endemic Phylica laevigata Pillans, endemic Phylica laevis (Eckl. & Zeyh.) Steud. endemic Phylica lanata Pillans, endemic Phylica lasiantha Pillans, endemic Phylica lasiocarpa Sond. endemic Phylica leipoldtii Pillans, endemic Phylica levynsiae Pillans, endemic Phylica linifolia Pillans, endemic Phylica litoralis (Eckl. & Zeyh.) D.Dietr. endemic Phylica longimontana Pillans, endemic Phylica lucens Pillans, endemic Phylica lucida Pillans, endemic Phylica mairei Pillans, endemic Phylica marlothii Pillans, indigenous Phylica marlothii Pillans var. crassa Pillans, endemic Phylica marlothii Pillans var. levynsiae Pillans, endemic Phylica marlothii Pillans var. marlothii, endemic Phylica maximiliani Schltr. endemic Phylica meyeri Sond. endemic Phylica minutiflora Sond. endemic Phylica montana Sond. endemic Phylica mundii Pillans, endemic Phylica natalensis Pillans, endemic Phylica nervosa Pillans, endemic Phylica nigrita Sond. endemic Phylica nigromontana Pillans, endemic Phylica nodosa Pillans, endemic Phylica obtusifolia Pillans, endemic Phylica odorata Schltr. endemic Phylica oleifolia Vent. endemic Phylica paniculata Willd. indigenous Phylica parviflora P.J.Bergius, endemic