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Fissidens dubius
Also called Rock Pocket Moss, Fissidens 'toshue Hougouke'
Fissidens dubius, commonly known as the rock-pocket moss, is a species of moss belonging to the family Fissidentaceae. First described by Palisot de Beauvois in 1805 from material collected in Philadelphia, it is a relatively large moss growing up to 5 cm (2 in) tall that forms loose to dense mats on calcareous substrates. The species is characterised by its serrated leaf margins, pale border of thick-walled cells, and typically dioicous reproduction. It has a broad global distribution across Europe, North and South America, Asia, North Africa, and New Zealand, occurring in various habitats from lowlands to alpine zones, particularly in shaded locations on basic soils and rocks. While morphologically similar to F. adianthoides, F. dubius is distinguished by its smaller leaf cells and irregularly thickened leaf tips.
Fissidens dubius grows primarily in calcareous (lime-rich) rock formations and other base-rich environments within forested areas. It can be found from lowland to alpine zones, though it shows a preference for shaded locations. The moss grows on various substrates including carbonate rock, base-rich silicate rock, humus-rich soil in limestone areas, dead wood, and the bases of trees. It grows in conditions that are moderately dry to moist, and where the pH ranges from neutral to basic.
Fissidens moss · Fissidens arnoldii · Welsh Pocket Moss · Ravenel's Fissidens Moss · Fissidens moss · Fissidens moss · Largeleaf fissidens moss · Fissidens hydropogon · Herzog's Pocket Moss · Fissidens microstictus · Fissidens pokhrensis · Polypody fissidens moss
Text excerpted from the Wikipedia article Fissidens dubius by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
