| Pappostipa ameghinoi (Speg.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa atacamensis (Parodi) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa barrancaensis (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa braun-blanquetii (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa chrysophylla (É.Desv.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa chubutensis (Speg.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa frigida (Phil.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa hieronymusii (Pilg.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa humilis (Cav.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa humilis var. ruiziana (Parodi) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa ibarii (Phil.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa ibarii f. pallescens (Parodi) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa maeviae (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa major (Speg.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa malalhuensis (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa nana (Speg.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa nicorae (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa parodiana (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa patagonica (Speg.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa ruiz-lealii (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa semperiana (F.A.Roig) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa sorianoi (Parodi) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa speciosa (Trin. & Rupr.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa speciosa var. media (Torres) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa vaginata (Phil.) Romasch. | Unresolved |  | WCSP | 
	
		| Pappostipa vatroensis (F.A.Roig) Romasch. | Unresolved |  | WCSP |