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Calostomas
2 species
Stalked gasteroid fungi with a small spore case on a stem of interwoven cords, opening through a colored, ridged apical mouth. Despite their puffball-like form they belong to the Boletales and are ectomycorrhizal.
Spore case: small, globose, with a red to crimson ridged peristome. Outer layer: gelatinous or breaking into fragments. Stem: of interwoven or wound cords. Spores: ellipsoid to globose, punctate or pitted.
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