常見(jiàn)例句In female flowers,Ovule is anatropous,unitegmic and tenuinuceuate with the development of integument finished at the stage of archespore. 在雌花中,胚珠是倒生的,單珠被,薄珠心,珠被于孢原期已發(fā)育完整。archesporium(archespore) 原孢子 返回 archespore