Haustorium(pl. haustoria) A specialized outgrowth of many parasitic fungi and certain parasitic plants such as dodder (Cuscuta) and broomrape (Orobanche), that penetrates into and withdraws food material from the cells of the host plant.

• 吸器：是某些寄生真菌和某些寄生植物如菟丝子（菟丝子属）和肉苁蓉（列当属）所长出的特化结构，它可以刺入寄主植物体内并从寄主细胞中吸取营养物质。