Sphenophyllum A.T.Brongniart, 1828 genus doubtful

Difurcosphenophyllum Lotsy, 1909 genus accepted

Lilpopia H.J.Conert & F.Schaarschmidt, 1970 genus accepted

Bowmanites E.W.Binney, 1871 genus accepted

Mesidiophyton G.A.Leisman, 1964 genus accepted

Cheirostrobus D.H.Scott, 1897 genus accepted

Sphenophyllostachys A.C.Seward, 1896 genus synonym

Sphenophyllites A.T.Brongniart, 1822 genus synonym

Tristachya Lilpop, 1937 genus synonym

Rotularia Sternberg, 1821 genus synonym

Xihuphyllum Q.-S.Chen, 1988 genus doubtful