Amphigenous

amphigenous (adjective) – growing more or less equally along all sides. Most fungal mycelia are amphigenous, i. e., they show a circular, outward-directed growth along all sides. Therefore, crustose lichens typically form more or less circular patches. Mushrooms can often be found growing in fairy rings because of the amphigenous growth of their mycelium below ground. Related terms: centrifugal.

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Other Resources: Flora Australia Fungi, Lichens  •  Glossary at Mushroom  •  Cornell Pl. Path.  •  APS Pl. Path.: A-D E-H I-M N-R S-V W-Z.
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