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epigenous

American  
[ih-pij-uh-nuhs] / ɪˈpɪdʒ ə nəs /

adjective

Botany.
  1. growing on the surface, especially the upper surface, as fungi on leaves.


epigenous British  
/ ɪˈpɪdʒɪnəs /

adjective

  1. biology growing on the surface, esp the upper surface, of an organism or part

    an epigenous fungus

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of epigenous

First recorded in 1865–70; epi- + -genous