Notes: Hattori (1986b) noted that F. errans, from New Guinea, seemed to be closely related to this species. However, morphologically, F. baladina appears more similar to the New Zealand species, F. media. Both species share a plicate perianth, the surface of which is often irregularly buliform. Hattori (1984a, 1986b) provided a few characters, including underleaf dentition and lobe size, to distinguish between F. baladina var. typica and var. edentata Hatt.. However, all of the characters listed by Hattori ibid show significant overlap in all Frullania species of subgenus Australes, and indeed in all Frullania species in general. Underleaf dentition was a critical salient character used by Hattori (1984a, 1986b) to differentiate the varieties. But, the lateral margins are variable in F. baladina, including in the original material itself, and consequently Frullania baladina var. edentata is reduced to synonymy.