title: Leptotrema
text: # Leptotrema
  
  Leptotrema is a genus of lichen-forming fungi in the family Graphidaceae. The genus was circumscribed in 1856 by Camille Montagne and Roelof Benjamin van den Bosch, with Leptotrema zollingeri assigned as the type species.
  
  ## Species
  
  As of March 2023, Species Fungorum (in the Catalogue of Life) accepts 15 species of Leptotrema.
  
  * Leptotrema aemulans (Kremp.) Müll.Arg. (1894)
  * Leptotrema aemulum Müll.Arg. (1895)
  * Leptotrema albocoronatum C.Knight ex Shirley (1889)
  * Leptotrema argillaceum Szatala (1955)
  * Leptotrema endoxanthellum Zahlbr. (1936)
  * Leptotrema laevium (Vain.) Zahlbr. (1923)
  * Leptotrema lepadodes (Tuck.) Zahlbr. (1912)
  * Leptotrema lithophila Oxner (1960)
  * Leptotrema melanosporum (C.Knight) Zahlbr. (1923)
  * Leptotrema microglaenoides (Vain.) Zahlbr. (1923)
  * Leptotrema neozelandicum C.W.Dodge (1970)
  * Leptotrema nitidulum Müll.Arg. (1895)
  * Leptotrema patulum (Nyl.) Müll.Arg. (1895)
  * Leptotrema polycarpum Müll.Arg. (1895)
  * Leptotrema polyporum Riddle (1923)
  