Key to Tasmanian Dicots
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Gymnostomum (Pottiaceae)
       
In Tasmania, Gymnostomum is represented by a single species, G. calcareum.

As the name suggests, G. calcareum occurs especially on calcareous rocks on the roofs of caves and cliffs where they form bright, pale green patches.

The leaves are tongue-shaped with a U-shaped cross-section. An obvious nerve is also present, which usually ends just below the apex but sometimes extending beyond. The capsules are yellowish and elliptical with a long-beaked operculum and lacking a peristome.

 
 
   
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Contact: Greg.Jordan@utas.edu.au