epigenous


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e·pig·e·nous

 (ĭ-pĭj′ə-nəs)
adj. Botany
Developing or growing on an upper surface, as fungi on leaves.

epigenous

(ɪˈpɪdʒɪnəs)
adj
(Biology) biology growing on the surface, esp the upper surface, of an organism or part: an epigenous fungus.