| 单词 | Pteretis struthiopteris |
| 释义 | Pteretis struthiopteris (extremely rare) n WORD FAMILY Pteretis struthiopteris n tall fern of northern temperate regions having graceful arched fronds and sporophylls resembling ostrich plumes Syn|Hyper Matteuccia struthiopteris, Onoclea struthiopteris, fiddlehead, ostrich fern, shuttlecock 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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