Source : Webster's Revised Unabridged Dictionary (1913)

Gasteromycetes \Gas`te*ro*my*ce"tes\, n. pl. [NL., from Gr. ?
   stomach + ? a mushroom.] (Bot.)
   An order of fungi, in which the spores are borne inside a sac
   called the peridium, as in the puffballs.

Source : WordNet®

Gasteromycetes
     n : fungi in which the hymenium is enclosed until after spores
         have matured: puffballs; earth stars; stinkhorn fungi
         [syn: {class Gasteromycetes}, {Gastromycetes}, {class
         Gastromycetes}]