单词 | Dryopteris thelypteris |
释义 | Dryopteris thelypteris (extremely rare) n WORD FAMILY Dryopteris thelypteris n fern having pinnatifid fronds and growing in wet places; cosmopolitan in north temperate regions Syn|Hypo|Hyper Thelypteris palustris, marsh fern Dryopteris thelypteris pubescens, Thelypteris palustris pubescens, meadow fern, snuffbox fern fern of northeastern North America 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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