单词 | Parathelypteris novae-boracensis |
释义 | Parathelypteris novae-boracensis (extremely rare) n WORD FAMILY Parathelypteris novae-boracensis n slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris Syn|Hyper Dryopteris noveboracensis, New York 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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