这个词是什么意思？
A division of the plant kingdom. Bryophyta contains the subdivision, Musci, which contains the classes: Andreaeopsida, BRYOPSIDA, and SPHAGNOPSIDA.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D044002 · MeSH 2026。
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