Nylander called the apothecium pale within, but forms with red-brown hypothecia are admitted by later writers.
Cyclocarpineae, apothecium usually circular, no capillitium.
Piece of thallus of Parmelia conspersa, with section through an apothecium.
In the Helvellaceae there is no apothecium but a large irregular fruit body which at maturity bears the asci on its surface.
The cup, or shield-shaped spot, or knob, which bears the fructification is named the apothecium.