Plicanthus difficilis (Steph.) L.Söderstr. et Vá

Váňa, Jiří, Söderström, Lars, Hagborg, Anders & von Konrat, Matt, 2013, Notes on Early Land Plants Today. 33. Notes on Anastrophyllaceae (Marchantiophyta), Phytotaxa 81 (1), pp. 26-32 : 30

Plicanthus difficilis (Steph.) L.Söderstr. et Vá ň a, comb. nov.

Basionym:— Chandonanthus difficilis Steph., J. & Proc. Roy. Soc. New South Wales 48: 101, 1914 ( Stephani & Watts 1914).

Type :— VANUATU. Aneityum , Gunn, hb. Watts 29 (holotype G-60753!) .

Note:— Chandonanthus difficilis is closely related to Plicanthus hirtellus . However, the type specimen is vigorous and more dense with more imbricate leaves with large marginal teeth. Underleaves are much smaller than normal sized Plicanthus hirtellus and very ciliate. For that reason we retain the species until the Plicanthus / Chandonanthus / Tetralophozia complex have been studied further, preferably also molecularly.