a plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytes
例句
用作名词 (n.)
Some cells of the lesion part of the thallus of P.yezoensis could be divide into several ring clearly because of different color. 条斑紫菜叶状体病变部分细胞由于颜色不同,清晰地分为几轮。