| 单词 | shield fern |
| 释义 | shield fern (once / 422119 pages) n WORD FAMILY shield fern: shield ferns USAGE EXAMPLESThe male fern resembles the marginal shield fern in outline, but the fronds are thinner, are not evergreen, and the sori are near the midvein. Tilton, George Henry, The Fern Lover's Companion—A Guide...(2010) n any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori Syn|Hypo|Hyper buckler fern Dryopteris dilatata, broad buckler-fern European shield fern Dryopteris goldiana, Goldie's fern, Goldie's shield fern, goldie's wood fernNorth American fern with a blackish lustrous stipe Polystichum setiferum, soft shield fernEuropean shield fern cultivated in many varieties 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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