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A new species of Lejeunea Lib. (Lejeuneaceae) from Low Várzea forest in lower Amazon (Pará, Brazil)

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An unknown species of Lejeunea was identified among the liverworts collected in the framework of a study of the bryophyte flora from the Várzea forest in Combu Island (Belém municipality, Pará) in lower Amazon. The species, characterized by autoicous plants, ovate leaves with crenulate to crenate margins, sometimes with 1–2 obtuse subapical teeth on the dorsal margin, leaf apex obtuse to acute, sometimes acuminate (1–2 cells in a row), rarely rounded, perianths smooth cylindrical, without keels, only weakly pentagonal at the apex, without beak and apex slightly recessed, is considered to be new to science and here described as Lejeunea combuensis. In the present paper, the new species is described, illustrated, its ecology as well as the differences to the morphologically similar Lejeunea bermudiana, L. caulicalyx and Taxilejeunea isocalycina are discussed; a key to Lejeunea species with eplicate perianths is presented.
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Keywords: AMAZONIA; LEJEUNEA; LIVERWORT; MARCHANTIOPHYTA; VÁRZEA FOREST

Document Type: Research Article

Publication date: June 1, 2012

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  • Nova Hedwigia is an international journal publishing original, peer-reviewed papers on current issues of taxonomy, morphology, ultrastructure and ecology of all groups of cryptogamic plants, including cyanophytes/cyanobacteria and fungi. The half-tone plates in Nova Hedwigia are known for their high quality, which makes them especially suitable for the reproduction of photomicrographs and scanning and transmission electron micrographs.
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