puffball

1.A basidium-bearing structure found in such basidiomycetous fungi as mushrooms and puffballs.

（学）具有担子真类的特征或与之有关。

2.any fungus of the family Geastraceae; in form suggesting a puffball whose outer peridium splits into the shape of a star.

g家族的任何类；外形上象马勃，其外部的包被分裂成星状。

3.Puffballs are named for the fact that puffs of spores are released when the dry and powdery tissues of the mature spherical fruiting body (basidiocarp) are disturbed.

马勃因其成熟球形果体（担子果）的乾粉状组织摇晃时会释出大量粉尘似的孢子而得名。