A fruitbody type in the Ascomycota (Sac Fungi) in which the spore-bearing surface (hymenium) is exposed at maturity. Apothecia can be saucer-shaped, cup-shaped, saddle-shaped or pitted, as in the morels. View an illustration of the apothecium.
a disk-shaped or cup-shaped ascocarp (fruiting body) of a lichen or non-lichenized ascomycete. In an apothecium, the asci are born in a single, orderly layer on an open, fairly flat surface. Image of apothecium from Mollisia dehnii from the Univ. of Wisconsin -- Madison Botany Department web site.