Thesium acuminatum- Thesium acutissimum
- Thesium aellenianum
- Thesium affine
- Thesium aggregatum
- Thesium alatavicum
- Thesium alatum
- Thesium alpinum
- Thesium amicorum
- Thesium angolense
- Thesium angulosum
- Thesium aristatum
- Thesium asperifolium
- Thesium asterias
- Thesium atrum
- Thesium australe
- Thesium bangweolense
- Thesium bathyschistum
- Thesium bavarum
- Thesium bequaertii
- Thesium bergeri
- Thesium bertramii
- Thesium billardieri
- Thesium boissieranum
- Thesium brachyanthum
- Thesium brachygyne
- Thesium brachystylum
- Thesium bundiense
- Thesium capitatum
- Thesium capitellatum
- Thesium capituliflorum
- Thesium carinatum
- Thesium chimanimaniense
- Thesium chinense
- Thesium cinereum
- Thesium commutatum
- Thesium compressum
- Thesium confine
- Thesium confusum
- Thesium conostylum
- Thesium costatum
- Thesium cymosum
- Thesium cystoseiroides
- Thesium debile
- Thesium decaryanum
- Thesium deceptum
- Thesium densiflorum
- Thesium diffusum
- Thesium dissitiflorum
- Thesium dissitum
- Thesium divaricatum
- Thesium diversifolium
- Thesium dolichomeres
- Thesium dollineri
- Thesium doloense
- Thesium durum
- Thesium ebracteatum
- Thesium ecklonianum
- Thesium elatius
- Thesium elegans
- Thesium equisetoides
- Thesium ericaefolium
- Thesium erythronicum
- Thesium euphorbioides
- Thesium euphrasioides
- Thesium exile
- Thesium fallax
- Thesium fastigiatum
- Thesium filipes
- Thesium flexuosum
- Thesium foliosum
- Thesium foveolatum
- Thesium frisea
- Thesium fruticosum
- Thesium fruticulosum
- Thesium funale
- Thesium fuscum
- Thesium galioides
- Thesium germainii
- Thesium glaziovii
- Thesium globosum
- Thesium glomeratum
- Thesium glomeruliflorum
- Thesium gnidiaceum
- Thesium goetzeanum
- Thesium gracilarioides
- Thesium gracile
- Thesium griseum
- Thesium gypsophiloides
- Thesium hararensis
- Thesium helichrysoides
- Thesium himalense
- Thesium hirsutum
- Thesium hispanicum
- Thesium hispidulum
- Thesium hispidum
- Thesium hockeanum
- Thesium hockii
- Thesium horridum
- Thesium humbertii
- Thesium humifusum
- Thesium humile
- Thesium hystricoides
- Thesium hystrix
- Thesium ifrikianum
- Thesium imbricatum
- Thesium impeditum
- Thesium impressum
- Thesium italicum
- Thesium junceum
- Thesium juncifolium
- Thesium junodii
- Thesium kilimandscharicum
- Thesium kotschyanum
- Thesium lacinulatum
- Thesium laetum
- Thesium leandrianum
- Thesium leptocaule
- Thesium leptostachyum
- Thesium lesliei
- Thesium leucanthum
- Thesium lewallei
- Thesium libanoticum
- Thesium libericum
- Thesium lineatum
- Thesium linophyllon
- Thesium lisae-mariae
- Thesium lobelioides
- Thesium longiflorum
- Thesium longifolium
- Thesium lopollense
- Thesium lycaonicum
- Thesium lynesii
- Thesium macedonicum
- Thesium macranthum
- Thesium macrogyne
- Thesium macrostachyum
- Thesium madagascariense
- Thesium magalismontanum
- Thesium malaissei
- Thesium manikense
- Thesium matteii
- Thesium mauritanicum
- Thesium maximiliani
- Thesium megalocarpum
- Thesium micranthum
- Thesium micromeria
- Thesium microphyllum
- Thesium micropogon
- Thesium minus
- Thesium multicaule
- Thesium multiramulosum
- Thesium namaquense
- Thesium natalense
- Thesium nationae
- Thesium nigricans
- Thesium nigromontanum
- Thesium nudicaule
- Thesium occidentale
- Thesium oresigenum
- Thesium orientale
- Thesium pallidum
- Thesium paniculatum
- Thesium parnassi
- Thesium paronychioides
- Thesium patulum
- Thesium pawlowskianum
- Thesium penicillatum
- Thesium phyllostachyum
- Thesium pilosum
- Thesium pinifolium
- Thesium polycephalum
- Thesium polygaloides
- Thesium procerum
- Thesium procumbens
- Thesium prostratum
- Thesium pseudocystoseiroides
- Thesium pseudovirgatum
- Thesium psilotoides
- Thesium pubescens
- Thesium pungens
- Thesium pycnanthum
- Thesium pygmaeum
- Thesium pyrenaicum
- Thesium quinqueflorum
- Thesium racemosum
- Thesium radicans
- Thesium ramosum
- Thesium rariflorum
- Thesium rasum
- Thesium rectangulum
- Thesium refractum
- Thesium repens
- Thesium resedoides
- Thesium robynsii
- Thesium rostratum
- Thesium rufescens
- Thesium rungwense
- Thesium rupestre
- Thesium saxatile
- Thesium scabriflorum
- Thesium scabrum
- Thesium scandens
- Thesium schliebenii
- Thesium schumannianum
- Thesium schweinfurthii
- Thesium scirpioides
- Thesium sedifolium
- Thesium selagineum
- Thesium sertulariastrum
- Thesium sonderianum
- Thesium spartioides
- Thesium spicatum
- Thesium spinosum
- Thesium spinulosum
- Thesium squarrosum
- Thesium strictum
- Thesium strigulosum
- Thesium stuhlmannii
- Thesium subaphyllum
- Thesium subnudum
- Thesium subsimile
- Thesium subsucculentum
- Thesium susannae
- Thesium szowitsii
- Thesium tauricolum
- Thesium tenue
- Thesium tenuissimum
- Thesium thomsonii
- Thesium transvaalense
- Thesium triflorum
- Thesium triste
- Thesium tyrolense
- Thesium unyikense
- Thesium urceolatum
- Thesium ussanguense
- Thesium utile
- Thesium virgatum
- Thesium viride
- Thesium viridifolium
- Thesium viscibaccatum
- Thesium welwitschii
- Thesium wheeleri
- Thesium whyteanum
- Thesium wightianum
- Thesium xerophyticum
- Thesium zeyheri