The andine Plagiochila tabinensis Steph. and the identity of Acrobolbus laceratus R. M. Schust. (Hepaticae)
Heinrichs, Jochen; Anton, Hermann; Holz, Ingo; Grolle, Riclef
Plagiochila tabinensis Steph. (sect. Bursatae Carl) is redescribed and depicted from material collected in Bolivia, Peru, Colombia and Costa Rica. Perianths are described for the first time. The species occurs in montane regions of the Neotropics and stands out by elongate triangular to rectangular leaves dissolving into long lobes, ocurrence of surface wax and a dorsal leaf base not or hardly decurrent along the stem. Chemically, P. tabinensis is characterised by several apigenin- and luteolin-di-C-glykosides and sesquiterpenes mainly of the 2,3-secoaromadendrane type as plagiochiline M and related plagiochilines with a carbonyl substituent at C-4. Acrobolbus laceratus R. M. Schust. proved to be synonymous.