Genera: 34; 15 families, mostly with 1 or 2 genera.
Plant theoryIn the
Plant theory they are treated as 1
Family and placed in
Subphase 1.
Families and GeneraAllisoniaceae: Allisonia.
Aneuraceae: Aneura, Cryptothallus, Lobatoriccardia, Riccardia, Verdoornia.
Calyculariaceae: Calycularia.
Fossombroniaceae: Fossombronia.
Petalophyllaceae: Petalophyllum, Sewardiella.
Hymenophytaceae: Hymenophyton.
Makinoaceae: Makinoa.
Metzgeriaceae: Apometzgeria, Austrometzgeria, Metzgeria, Steereella, Vandiemenia
Mizutaniaceae: Mizutania.
Moerckiaceae: Hattorianthus, Moerckia.
Pallaviciniaceae: Greeneothallus, Jensenia, Pallavicinia, Podomitrium,Seppeltia, Symphyogyna, Symphyogynopsis, Xenothallus.
Pelliaceae: Noteroclada, Pellia.
Petalophyllaceae: Petalophyllum, Sewardiella
Phyllothalliaceae: Phyllothallia.
Sandeothallaceae: Sandeothallus.