All photographs copyright (2003-2013) by Kris H. Light

<strong>Bracken fern</strong>
<em>Pteridium aquilinum</em>
These ferns are very common in waste areas in the southeast. It is poisonous to humans, pigs, sheep, horses, cattle. The principal toxin is <u>thiaminase</u>, a chemical that splits thiamine ...
Bracken fern
Pteridium aquilinum
These ferns are very common in waste areas in the southeast. It is poisonous to humans, pigs, sheep, horses, cattle. The principal toxin is thiaminase, a chemical that splits thiamine (vitamin B1).

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