| NOUN | plant | hard fern | any of several ferns of the genus Blechnum |
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| Meaning | Any of several ferns of the genus Blechnum. | |
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| Member of | Blechnum, genus Blechnum | In some classification systems placed in family Polypodiaceae |
| Narrower | deer fern, Blechnum spicant | fern with erect fronds of Europe and western North America |
| Broader | fern | Any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward |
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