Pteridium aquilinum; bracken fern [Dennstaedtiaceae]  Very common strong and coarsely toothed fern with worldwide distribution.  Large leaves triangular in outline, twice compound, largest divisions apparently into three nearly equal parts, and divided into pinnae and pinnules.  Sori continuous along, and partly covered by, leaf margins of the pinnules.  Open woods and woodland openings, often on poor soil.  [010]

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