Refer to Project Reference for literature cited here
:
Müller 2009; as Bartramia patens var. robusta, He 1998; Hässel et al. 1984; Matcham et al. 2007; Matteri 1985; Matteri & Schiavone 2002; as Exodokidium donati, Herzog 1937; He 1998; as Breutelia robusta, Dusén 1903
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