Scleranthus, the knawels, are a genus of herbaceous plants in the family Caryophyllaceae. It includes 12 species native to Europe, Siberia, western Asia, north Africa, Ethiopia, New Guinea, and Australia.
Species 12 species are accepted. Scleranthus annuus L. – German-knotweed, knawel or annual knawel, native to Africa, Europe, Asia and naturalised elsewhere. Scleranthus biflorus (J.R.Forst. & G.Forst.) Hook.f. – knawel, cushion-bush or two-flowered knawel, native to Australia and New Zealand Scleranthus brockiei P.A.Will. – native to Australia and New Zealand Scleranthus delortii Scleranthus diander R.Br. – tufted knawel, native to Australia Scleranthus fasciculatus – native to Australia, introduced to New Zealand Scleranthus × intermedius Scleranthus minusculus F.Muell. – native to Australia Scleranthus perennis L. – perennial knawel Scleranthus pungens R.Br. – native to Australia Scleranthus singuliflorus (F.Muell.) Mattf. – one-flowered knawel, native to higher alpine areas in Australia Scleranthus uncinatus Scleranthus uniflorus
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