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单词 Ophioglossidae
释义 Ophioglossidae
[´äf·ē·ō`gläs·ǝ´dē]
BOTANY
The adder's-tongue ferns, a small subclass of the class Polypodiopsida; the plants are homosporous and eusporangiate and are distinguished by the arrangement of the sporogenous tissue in the characteristic fertile spike of the sporophyte.
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