The basidioma is composed mainly of sterile tightly packed hyphae; in most species there is a distinct fertile layer, the hymenium, on the surface of the basidioma that bears the basidial hyphae which, after meiosis, give rise to the basidiospores.
担子果主要由紧密缠绕的不育菌丝组成，多数种类还有明显的可育层子实层，子实层位于担子果的表面，由菌丝形成担子，减数分裂后产生担孢子（参见 basidium