hypha

hypha (#) , noun

any of the threadlike filaments forming the mycelium of a fungus. See hyphae.

Hypha , noun, plural

[New Latin, from Greek "yfh` a web.]

(Botany) The long, branching filaments of which the mycelium (and the greater part of the plant) of a fungus is formed. They are also found enveloping the gonidia of lichens, making up a large part of their structure.

Also: Hyphae