瘦果

zhè yǔ shòu guǒ xiāng sì bù tóng diǎn zài yú yǐng guǒ de guǒ pí hé zhǒng pí jǐn mì yù hé bù yì fēn lí

这与瘦果相似，不同点在于颖果的果皮和种皮紧密愈合不易分离。

It is similar to an achene except that the ovary wall is fused with the seed coat.