| 单词 |
polypodiopsida |
| 释义 |
Polypodiopsida Polypodiopsida[‚päl·i‚päd·ē′äp·səd·ə] (botany) A class of the division Polypodiophyta; stems of these ferns bear several large, spirally arranged, compound leaves with sporangia grouped in sori on their undermargins. |
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