| 单词 | wedge-fern |
| 释义 | > as lemmaswedge-fern wedge-fern n. a fossil fern of the genus Sphenopteris. ΘΚΠ the world > plants > particular plants > ferns > [noun] > fossil ferns sphenopteris1837 wedge-leaf fern1851 wedge-fern1867 glossopteris1883 Medullosa1885 medullosan1920 1867 W. W. Smyth Treat. Coal & Coal-mining 36 Sphenopteris (wedge-fern). < as lemmas |
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