Name: Scleroderma citrinum
Citation: Syn. meth. fung. (Göttingen) 1: 153 (1801)
Fruiting Body: 2-10 cm across; round or flattened; the surface hard and scaly, yellowish to yellow-brown, often cracked; the “skin” whitish when sliced but blushing pinkish; sometimes gathered at the base, where mycelial strands may be found.
Spore Mass: Thick and white at first, becoming purple to purple-black from the center outwards; eventually blackish to brownish and dust-like.
Chemical Reactions: Surface dark reddish with KOH.
Microscopic Features: Spores 8-13 µ; round; prominently reticulate.
Scleroderma aurantium and Scleroderma vulgare are synonyms.