1	Basidiospores allantoid	2
–	Basidiospores cylindrical	6
2	Hymenial surface smooth	3
–	Hymenial surface grandinoid, granulose to pruinose	4
3	Basidiospores > 13.5 µm long, cystidia subcylindrical to subconiform	Alloexidiopsisxantha
–	Basidiospores < 13.5 µm long, cystidia tubular	Alloexidiopsisnivea
4	Cystidia absent	Alloexidiopsiscalcea
–	Cystidia present	5
5	Cystidia > 5.5 µm wide	Alloexidiopsisgrandinea
–	Cystidia < 5.5 µm wide	Alloexidiopsissinensis
6	Basidia > 28 µm long, cystidia clavate to fusiform	Alloexidiopsisyunnanensis
–	Basidia < 28 µm long, cystidia cylindrical	7
7	Basidiospores > 11 µm long, cystidia < 25 µm long	Alloexidiopsisaustraliensis
–	Basidiospores < 11 µm long, cystidia > 25 µm long	Alloexidiopsisschistacea