Cullen is a genus of legumes (family Fabaceae) native to tropical, subtropical and arid regions of Africa, Asia and Australia. Despite the origin implied in the name of the constituent species Cullen americanum, legumes of this genus are not native to the Americas.
Cullen was previously included in broad definitions of the allied genus Psoralea.
Species , Plants of the World Online accepted the following species:
Cullen americanum (L.) Rydb. Cullen australasicum (Schltdl.) J.W.Grimes Cullen badocanum (Blanco) Verdc. Cullen balsamicum (F.Muell.) J.W.Grimes Cullen biflorum (Kuntze) C.H.Stirt. Cullen candidum J.W.Grimes Cullen cinereum (Lindl.) J.W.Grimes Cullen corallum J.W.Grimes Cullen corylifolium (L.) Medik. Cullen cuneatum (W.Fitzg.) J.W.Grimes Cullen discolor (Domin) J.W.Grimes Cullen drupaceum (Bunge) C.H.Stirt. Cullen gaudichaudianum (Decne.) J.W.Grimes Cullen graveolens (Domin) J.W.Grimes Cullen jaubertianum (Fenzl) C.H.Stirt. Cullen lachnostachys (F.Muell.) J.W.Grimes Cullen leucanthum (F.Muell.) J.W.Grimes Cullen leucochaites J.W.Grimes Cullen martini (F.Muell.) J.W.Grimes Cullen microcephalum (Rchb. ex Kunze) J.W.Grimes Cullen pallidum (N.T.Burb.) J.W.Grimes Cullen parvum (F.Muell.) J.W.Grimes Cullen patens (Lindl.) J.W.Grimes Cullen plicatum (Delile) C.H.Stirt. Cullen plumosum J.W.Grimes Cullen pogonocarpum J.W.Grimes Cullen praeruptorum J.W.Grimes Cullen pustulatum (F.Muell.) J.W.Grimes Cullen spicigerum (Domin) A.E.Holland Cullen stipulaceum (Decne.) J.W.Grimes Cullen tenax (Lindl.) J.W.Grimes Cullen tomentosum (Thunb.) J.W.Grimes Cullen virens (W.Fitzg.) J.W.Grimes Cullen walkingtonii (F.Muell.) J.W.Grimes
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