aerial mycelium

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aer·i·al my·ce·li·um

the portion of mycelium that grows upward or outward from the surface of the substrate, and from which propagative spores develop in or on characteristic structures that are distinctive for various generic groups.
References in periodicals archive ?
Micromonospora in aerial mycelium white color and substrate mycelium pink color were formed in PDA media.
Then coverslip was carefully withdrawn from the medium and observed directly under microscope to differentiate between substrate and aerial mycelium.
Ascomata were non-ostiolate, superficial, white to light cream colored, globose or subglobose, measuring 120 [micro]m-600 [micro]m in diameter, and covered with a white aerial mycelium.