Scleranthus, the knawels, are a genus of herbaceous plants in the family Caryophyllaceae. Selected species 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 diander R.Br. (Tufted knawel), native to Australia 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 References Further reading Caryophyllaceae Caryophyllaceae genera Taxa named by Carl Linnaeus