| 单词 | oak fern |
| 释义 | oak fern (once / 787955 pages) n WORD FAMILY oak fern: oak ferns USAGE EXAMPLESThe outlines of the young bracken resemble the little oak fern. Tilton, George Henry, The Fern Lover's Companion—A Guide...(2010) Dryópteris, Greek for oak fern, has been chosen by Underwood and Britton and Brown and has grown in favor. Tilton, George Henry, The Fern Lover's Companion—A Guide...(2010) The parts of the oak fern develop with great regularity, each pinna, pinnule and lobe having another exactly opposite to it nearly always. Tilton, George Henry, The Fern Lover's Companion—A Guide...(2010) n bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere Syn|Hyper Gymnocarpium dryopteris, Thelypteris dryopteris 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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