coiled bracken fern frond brake eagle pteridium aquilinum unfurling spring closeup |
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| navigate by keyword : abstract aquilinum background botanical botany bracken brake brown close coiled countryside curl curled deciduous detail diffused ecology environment fern foliage frond fronds green greenery grow growth herbaceous horizontal leaf leaves lush natural nature new nobody organic outdoors perennial plant pteridium pteridophyta shoot spring stalks stem summer texture unfurling vascular verdant |
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| Bracken, brake or eagle fern, Pteridium aquilinum, is one of the oldest ferns. It is an herbaceous, perennial plant that is very prolific and abundant, which could be threat to biodiversity. It spreads from spores found on the underside of the leaf in structures called sori. |
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