Psilostrophe biennis Auct. (original description)
Psilostrophe cerifera A.Nelson (original description)
Psilostrophe cerifera var. biennis A.Nelson (original description)
Psilostrophe cerifera var. cerifera A.Nelson accepted as Psilostrophe cerifera A.Nelson (original description)
Psilostrophe lanata Auct. (original description)
Psilostrophe pumila (M.E.Jones) Jones ex A.Nelson (original description)
Psilostrophe sparsiflora (A.Gray) A.Nelson (original description)
Psilostrophe tagetina var. lanata A.Nelson accepted as Psilostrophe tagetina (Nutt.) Greene (original description)
Xanthium commune var. wootonii Cockerell (original description)
Xanthium wootonii Auct. (original description)