| Salix exigua Nutt. | Accepted |  | WCSP (in review) |  | 
	
		| Salix exigua var. angustissima (Andersson) Reveal & C.R.Broome | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. columbiana (Dorn) Dorn | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. exigua | Synonym |  | TRO |  | 
	
		| Salix exigua subsp. exigua | Synonym |  | TRO |  | 
	
		| Salix exigua var. exterior (Fernald) C.F.Reed | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. gracilipes (C.R.Ball) Cronquist | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. hindsiana (Benth.) Dorn | Accepted |  | WCSP (in review) |  | 
	
		| Salix exigua subsp. interior (Rowlee) Cronquist | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. interior (Rowlee) Cronquist | Synonym |  | TRO |  | 
	
		| Salix exigua var. luteosericea C.K.Schneid. | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua subsp. melanopsis (Nutt.) Cronquist | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. melanopsis (Nutt.) Cronquist | Synonym |  | TRO |  | 
	
		| Salix exigua var. nevadensis (S.Watson) C.K.Schneid. | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. parishiana (Rowlee) Jeps. | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. pedicellata (Andersson) Cronquist | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. sericans (Nees) Dorn | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. sessilifolia (Nutt.) Dorn | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. stenophylla (Rydb.) C.K.Schneid. | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. tenerrima (L.F.Hend.) C.K.Schneid. | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua var. virens Rowlee | Synonym |  | WCSP (in review) |  | 
	
		| Salix exigua f. wheeleri (Rowlee) C.F. Reed | Synonym |  | TRO |  |