Cordieritidaceae is a family of fungi in the order Cyttariales.

Species in this family are saprobes or lichenicolous.

[1] The ascomata of Cordieritidaceae species are apothecial, and range in shape from disc-shaped, cup-shaped, funnel-shaped, to ear-shaped.

They are either sessile or stipitate, sometimes arising from a common base or from branched stipes with a dark stroma, and they are sometimes covered with hairs.

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