1.外生孢子;(孢子)外壁
2.分生孢子
1.a spore that is formed outside a parent cell, or outside a spore-bearing organ, especially by extrusion
2.the outermost layer of a spore
1.The perispore is thin and the surface ornamentation is formed by the exospore .
周壁很薄,由外壁形成孢子纹饰的轮廓;