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rhyniopsida
释义
Rhyniopsida
Rhyniopsida
[
‚rī·nē′äp·səd·ə
]
(paleobotany)
A class of extinct plants in the subkingdom Rhyniophyta characterized by leafless, usually dichotomously branched stems that bore terminal sporangia.
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更新时间:2025/11/1 17:20:53