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.^[1]

12 species are accepted.^[1]

• 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 Gren.
• Scleranthus diander R.Br. – tufted knawel, native to Australia
• Scleranthus fasciculatus (R.Br.) Hook.f. – native to Australia, introduced to New Zealand
• Scleranthus × intermedius Kitt.
• 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 Schur
• Scleranthus uniflorus P.A.Will.

• "Scleranthus". PlantNET - New South Wales Flora Online. Royal Botanic Gardens & Domain Trust. Retrieved 2008-02-23.
• "Scleranthus". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government, Canberra. Retrieved 2008-02-23.
• "Genus: Scleranthus L." Germplasm Resources Information Network (GRIN). United States Department of Agriculture, Agricultural Research Service, Beltsville Area. Archived from the original on 2011-06-05. Retrieved 2008-02-23.