单词 | Olfersia cervina |
释义 | Olfersia cervina (extremely rare) n WORD FAMILY Olfersia cervina n tropical American terrestrial fern with leathery lanceolate fronds; sometimes placed in genus Polybotrya Syn|Hyper Polybotria cervina, Polybotrya cervina, hart's-tongue, hart's-tongue fern fern any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores |
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