23, see text Chlorociboria is the type genus of in the fungal family Chlorociboriaceae within order Helotiales.

[1] Two common temperate zone species, Chlorociboria aeruginascens and Chlorociboria aeruginosa, can only reliably be distinguished by microscopic examination.

The hyphae and fruit bodies of all species make xylindein, a secondary metabolite that stains the substrate wood blue-green, with "green oak" being a valued commodity in woodworking.

[2] The blue-green pigmented wood is featured in Tunbridge ware.

Blue-green stain is evident year-round, with ascocarp production occurring from summer to fall.