Entry from British & World English dictionary
Definition of rasp fern in English:
A small robust fern with prickly toothed edges to the lobes, growing in woodland and rainforests in Australasia and Polynesia, typically in rocky crevices.
- Genus Doodia, family Blechnaceae
- The Rasp fern also contains a powerful hormonal insecticide that kills larval stage insects.
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