Salix vulgaris Clayton ex Gronov. Salix tristisHort. ex Pursh Salix testaceaWright ex Anderss. Salix purshianaSpreng. Salix nigra var. marginataWimm. ex Andersson Salix nigra var. longifoliaAndersson Salix nigra var. lindheimeriC.K.Schneid. Salix nigra var. falcata (Pursh) Torr. Salix nigra var. brevijulisAndersson Salix nigra var. brevifoliaAndersson Salix nigra var. altissimaSarg. Salix ludovicianaRaf. Salix ligustrinaF.Michx. Salix houstonianaPursh Salix gongylocarpaShuttlew. ex Anderss. Salix flavovirensHornem. Salix falcataPursh Salix dubiaTrautv. Salix denudataRaf. Pleiarina nigra (Marshall) N. Chao & G.T. Gong Nestylix falcata (Pursh) Raf. Nectolis ambigua (Pursh) Raf. Amerina nigra (Marsh.) Raf. Amerina houstoniana (Pursh) Raf.