Reboulia hemisphaerica, the hemisphaeric liverwort[2] or small mushroom-headed liverwort,[2] is the only species of liverwort in the genus Reboulia.

A possible second species Reboulia queenslandica (Stephani) M. Hicks was published in 1992,[3] but it was later determined to be a polyploid cross between two varieties of R. hemisphaerica, so not a distinct species.

[4] Subsequent lists and publications do not recognize it as distinct.

[5] Riccardin C is a phenolic cyclic bibenzyl secondary metabolite isolated from R. hemisphaerica,[6] as is marchantinquinone.

This bryophyte-related article is a stub.