| NOUN | plant | whisk fern | chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms |
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| Meaning | chiefly tropical clump-forming plants of skeletal appearance resembling whisk brooms; lacking roots. | |
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| Member of | Psilotum, genus Psilotum | type genus of the Psilotaceae |
| Narrower | skeleton fork fern, Psilotum nudum | pantropical epiphytic or terrestrial whisk fern with usually dull yellow branches and minute leaves |
| Broader | fern ally | pteridophytes of other classes than Filicopsida |
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