protonema
n. 原丝体；丝状体
形容词：protonemal 名词复数：protonemata
例句
用作名词(n.)
- Describing the characters and developmental features of spore germination and protonema development of moss applied in this research by microscopy.采用显微观察的方法具体描述了藓类植物孢子萌发与原丝体发育的特征及发育特点。