YIP, KWOK LEUNG. Herbarium (CINC), Department of Biological Sciences, University of Cincinnati, Cincinnati, OH 45221-0006. - Lectotypification of Pleuridium subulatum and P. acuminatum (Bryophyta).
Two widespread and morphologically similar species, P.
subulatum (Hedw.) Rabenh. and P. acuminatum Lindb., have
caused much confusion since their inception. Correlations of key
characters (sexual conditions and lamina thickness) with chromosome
numbers suggest that the two species are distinct. The two species
are maintained and lectotypified.
Key words: biodiversity, cleistocarpous mosses, Ditrichaceae, nomenclature, taxonomy