Fissidens gracilifolius (NL: Steenvedermos / EN: Narrow-leaved Pocket-moss / DE: Schmalblättriges Spaltzahnmoos / FR: ?) is a minute Fissidens with bordered leaves, growing directly on limestone or siliceous rock. The shoots are usually only 1–1.5 mm wide, and fertile shoots are no more than 5 mm tall. F. gracilifolius differs from F. pusillus having very elongated leaves at the top of the shoot near the base of the seta, and is typically found in dry habitats, but F. gracilifolius and F. pusillus are difficult to distinguish. These two species are part of a difficult complex of species (with F. limbatus and F. viridulus), and have to be confirmed by microscopical examination.
(info on the species based on: "Mosses and Liverworts of Britain and Ireland - a field guide" published by the British Bryological Society)
Image: Schilde (B) - 03/03/2012
© Johan Dierckx
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