1. Calasterelloideae T.X.Zheng & D.G.Long, subfam. nov.

Calasterelloideae T.X.Zheng & D.G.Long subfam. nov. includes one genus, Calasterella D.G.Long & T.X.Zheng, gen. nov.

Diagnosis: Differs from Aytonioideae and Reboulioideae by the following combination: dioicous sexuality; strictly dichotomous branching pattern; ventral tissue with mucilage cavities; up to four appendages of ventral scale; deeplylobed female receptacle with pseudoperianths and involucre cleft to base; lemon-yellow spores with conspicuous trilete ridges, prominent equatorial wing, similar ornamentation on proximal and distal surfaces, lacking large areolae but with fine network of alveolae.

Type: Calasterella D.G.Long & T.X.Zheng, gen. nov.