| 单词 | limestone fern |
| 释义 | limestone fern (extremely rare) n WORD FAMILY limestone fern n yellow-green fern of rocky areas of northern hemisphere Syn|Hyper Gymnocarpium robertianum, northern oak 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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