Editing Hypha (section)

{{About|fungal structures|the identically pronounced slang term and hip-hop subculture|hyphy}}
{{Short description|Long, filamentous structure in fungi and Actinobacteria}}
[[File:Penicillium.jpg|thumb|Hyphae of ''[[Penicillium]]'']]
[[File:HYPHAE.png|thumb|Fungal hyphae cells: (1) Hyphal wall. (2) [[Septum (cell biology)|Septum]]. (3) [[Mitochondrion]]. (4) Vacuole. (5) [[Ergosterol]] crystal. (6) [[Ribosome]]. (7) [[Cell nucleus|Nucleus]]. (8) [[Endoplasmic reticulum]]. (9) Lipid body. (10) [[Plasma membrane]]. (11) [[Spitzenkörper]]. (12) [[Golgi apparatus]]]]
[[File:Hypha on rice.jpg|thumb|Hyphae growing on [[tomato sauce]] (the pale oblong objects to the side are rice grains)]] 
[[File:Aspergillus niger 01.jpg|thumb|''[[Aspergillus niger]]'']]
[[File:Conidium.png|thumb|[[conidium|Conidia]] on conidiophores]]

A '''hypha''' ({{etymology|grc|''{{wikt-lang|grc|ὑφή}}'' ({{grc-transl|ὑφή}})|web}}; {{plural abbr|'''hyphae'''}}) is a long, branching, filamentous structure of a [[fungus]], [[oomycete]], or [[actinobacterium]].<ref name=Brock>{{cite book | editor = Madigan M | editor2 = Martinko J | title = Brock Biology of Microorganisms | edition = 11th | publisher = Prentice Hall | year = 2005 | isbn = 0-13-144329-1 }}</ref> In most fungi, hyphae are the main mode of vegetative growth, and are collectively called a [[mycelium]].