Linked from
The 9 pages that link to Ascus, each with the reason it gives.
AscomycotaBroader topic: The ascus is the defining reproductive structure of Ascomycota.
HymeniumBroader topic: Some fungi form hymenia containing asci rather than basidia.
Fruiting bodyBroader topic: In cup fungi and morels, asci line parts of the fruiting body.
ApotheciumBroader topic: Apothecia bear asci across their exposed fertile surface.
StromaBroader topic: The asci inside stromatic fruiting structures produce ascospores.
Morchella esculentaRelated: Morchella produces its ascospores in asci lining the cap's surface.