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A thick-walled, dikaryotic, often overwintering spore of most rust and smut fungi, which germinates to form a basidium.
(Botany) any of the dark noninfective spores that are produced in each telium of the rust fungi and remain dormant during the winter. Also called: teleutospore
[C20: from telium + spore]
te•li•o•spore(ˈti li əˌspɔr, -ˌspoʊr, ˈtɛl i-)
a thick spore that develops in the telium of a rust or smut fungus during the fall and germinates the following spring.