Appressorium (pl.appressoria) In many parasitic fungi, a flattened hyphal structure that presses closely against the host epidermis.
在许多寄生真菌中,一种紧密接触寄主体表膨大的菌丝结构。
英语百科
Appressorium
An appressorium is a specialized cell typical of many fungal plant pathogens that is used to infect host plants. It is a flattened, hyphal "pressing" organ, from which a minute infection peg grows and enters the host, using turgor pressure capable of punching through even Mylar.