Species list: Thesium
- Thesium abietinum Schltr. DDT
- Thesium acuminatum A.W.Hill LC
- Thesium acutissimum A.DC. LC
- Thesium aggregatum A.W.Hill LC
- Thesium alatum Hilliard & B.L.Burtt LC
- Thesium albomontanum Compton LC
- Thesium angulosum DC. LC
- Thesium annulatum A.W.Hill DDT
- Thesium archeri Compton LC
- Thesium asperifolium A.W.Hill DDT
- Thesium asterias A.W.Hill LC
- Thesium bathyschistum Schltr. DDT
- Thesium boissierianum A.DC. DDT
- Thesium brachygyne Schltr. DDT
- Thesium brachystylum A.W.Hill LC
- Thesium breyeri N.E.Br. DDT
- Thesium capitatum L. LC
- Thesium capitellatum A.DC. LC
- Thesium capituliflorum Sond. LC
- Thesium carinatum A.DC. LC
- Thesium carinatum A.DC. var. carinatum Not Evaluated
- Thesium celatum N.E.Br. VU
- Thesium commutatum Sond. LC
- Thesium confusum J.C.Manning & F.Forest LC
- Thesium congestum R.A.Dyer LC
- Thesium cornigerum A.W.Hill DDT
- Thesium costatum A.W.Hill var. costatum LC
- Thesium costatum A.W.Hill var. juniperinum A.W.Hill LC
- Thesium costatum A.W.Hill var. paniculatum N.E.Br. LC
- Thesium cupressoides A.W.Hill LC
- Thesium cymosum A.W.Hill LC
- Thesium davidsonae Brenan VU
- Thesium decipiens Hilliard & B.L.Burtt LC
- Thesium densiflorum A.DC. LC
- Thesium densum N.E.Br. DDT
- Thesium disciflorum A.W.Hill LC
- Thesium disparile N.E.Br. DDT
- Thesium dissitiflorum Schltr. LC
- Thesium diversifolium Sond. DDT
- Thesium durum Hilliard & B.L.Burtt LC
- Thesium ecklonianum Sond. EN
- Thesium elatius Sond. LC
- Thesium equisetoides Welw. ex Hiern LC
- Thesium ericaefolium A.DC. LC
- Thesium euphorbioides L. LC
- Thesium euphrasioides A.DC. LC
- Thesium exile N.E.Br. LC
- Thesium fallax Schltr. DDD
- Thesium flexuosum A.DC. LC
- Thesium fragile L.f. DDT
- Thesium frisea L. var. frisea DDT
- Thesium frisea L. var. thunbergii A.DC. LC
- Thesium fructicosum A.W.Hill LC
- Thesium fruticulosum (A.W.Hill) J.C.Manning & F.Forest LC
- Thesium funale L. LC
- Thesium galioides A.DC. LC
- Thesium glaucescens A.W.Hill DDT
- Thesium glomeratum A.W.Hill DDT
- Thesium glomeruliflorum Sond. LC
- Thesium gnidiaceum A.DC. var. gnidiaceum LC
- Thesium gnidiaceum A.DC. var. zeyheri Sond. DDT
- Thesium goetzeanum Engl. LC
- Thesium gracilarioides A.W.Hill LC
- Thesium gracile A.W.Hill LC
- Thesium gracilentum N.E.Br. VU
- Thesium griseum Sond. LC
- Thesium gypsophiloides A.W.Hill LC
- Thesium hillianum Compton DDT
- Thesium hirsutum A.W.Hill LC
- Thesium hirtum (Sond.) Zhigila, Verboom & Muasya LC
- Thesium hispidulum Lam. ex Sond. var. hispidulum LC
- Thesium hispidulum Lam. ex Sond. var. subglabrum A.W.Hill DDT
- Thesium hollandii Compton DDT
- Thesium horridum Pilg. DDT
- Thesium hystricoides A.W.Hill LC
- Thesium hystrix A.W.Hill LC
- Thesium imbricatum Thunb. LC
- Thesium impeditum A.W.Hill LC
- Thesium inversum N.E.Br. DDT
- Thesium jeanae Brenan Rare
- Thesium junceum Bernh. var. junceum LC
- Thesium junceum Bernh. var. mammosum A.W.Hill DDT
- Thesium junceum Bernh. var. plantagineum A.W.Hill DDT
- Thesium juncifolium DC. LC
- Thesium karooicum Compton LC
- Thesium lacinulatum A.W.Hill LC
- Thesium leptocaule Sond. DDT
- Thesium leptostachyum A.DC. DDT
- Thesium lesliei N.E.Br. LC
- Thesium lisae-mariae Stauffer DDT
- Thesium litoreum Brenan CR
- Thesium lobelioides A.DC. LC
- Thesium macrostachyum A.DC. LC
- Thesium magalismontanum Sond. LC
- Thesium marlothii Schltr. DDT
- Thesium megalocarpum A.W.Hill LC
- Thesium microcarpum A.DC. DDT
- Thesium microcephalum A.W.Hill DDT
- Thesium micromeria A.DC. LC
- Thesium micropogon A.DC. DDD
- Thesium minus (A.W.Hill) J.C.Manning & F.Forest DDT
- Thesium multiramulosum Pilg. LC
- Thesium namaquense Schltr. LC
- Thesium natalense Sond. LC
- Thesium nationae A.W.Hill DDT
- Thesium nigromontanum Sond. LC
- Thesium nudicaule A.W.Hill LC
- Thesium occidentale A.W.Hill LC
- Thesium oresigenum Compton LC
- Thesium pallidum A.DC. LC
- Thesium paniculatum L. LC
- Thesium paronychioides Sond. LC
- Thesium patersoniae A.W.Hill DDD
- Thesium patulum A.W.Hill LC
- Thesium penicillatum A.W.Hill LC
- Thesium phyllostachyum Sond. LC
- Thesium pinifolium A.DC. LC
- Thesium pleuroloma A.W.Hill DDT
- Thesium polycephalum Schltr. LC
- Thesium polygaloides A.W.Hill VU
- Thesium procerum N.E.Br. LC
- Thesium prostratum A.W.Hill LC
- Thesium pseudovirgatum Levyns LC
- Thesium pubescens A.DC. LC
- Thesium pungens A.W.Hill LC
- Thesium pycnanthum Schltr. LC
- Thesium quinqueflorum Sond. DDT
- Thesium racemosum Bernh. LC
- Thesium rariflorum Sond. DDT
- Thesium rasum (A.W.Hill) N.E.Br. LC
- Thesium repandum A.W.Hill DDD
- Thesium resedoides A.W.Hill LC
- Thesium resinifolium N.E.Br. DDT
- Thesium rufescens A.W.Hill DDT
- Thesium sawae Zhigila, Verboom & Muasya Not Evaluated
- Thesium scabrum L. LC
- Thesium scandens E.Mey. ex Sond. LC
- Thesium schumannianum Schltr. DDD
- Thesium scirpioides A.W.Hill LC
- Thesium selagineum A.DC. DDT
- Thesium semotum N.E.Br. LC
- Thesium sertulariastrum A.W.Hill DDT
- Thesium sonderianum Schltr. DDT
- Thesium spartioides A.W.Hill LC
- Thesium spicatum L. LC
- Thesium spinosum L.f. LC
- Thesium spinulosum A.DC. LC
- Thesium squarrosum L.f. LC
- Thesium strictum P.J.Bergius LC
- Thesium subnudum Sond. var. foliosum A.W.Hill LC
- Thesium subnudum Sond. var. subnudum LC
- Thesium subsimile N.E.Br. DDD
- Thesium susannae A.W.Hill Rare
- Thesium translucens A.W.Hill LC
- Thesium transvaalense Schltr. LC
- Thesium triflorum Thunb. ex L.f. LC
- Thesium turczaninowii Sond. LC
- Thesium umbelliferum A.W.Hill LC
- Thesium urceolatum A.W.Hill DDT
- Thesium utile A.W.Hill LC
- Thesium vahrmeijeri Brenan EN
- Thesium virens E.Mey. ex A.DC. DDT
- Thesium virgatum Lam. LC
- Thesium viridifolium Levyns LC
- Thesium whitehillensis Compton LC
- Thesium zeyheri A.DC. LC