Sterigma

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sterigma

[stə′rig·mə]
(botany)
A peg-shaped structure to which needles are attached in certain conifers.
(mycology)
A slender stalk arising from the basidium of some fungi, from the top of which basidiospores are formed by abstriction.

Sterigma

 

in basidiomycetous fungi, one of the stalks of the sporebearing organ, or basidium. Basidiospores develop on the sterigmata.