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Common Name: Bracken fern

Scientific Name: Pteridium aquilinum

Common Family Name: Bracken fern family

Scientific Family Name:Pteridiaceae

Main toxic Principle:   Ptaquiloside glycoside, thiaminase

Clinical Signs:   Ptaquiloside causes aplastic anemia in cattle and sheep, enzootic bovine hematuria due to neoplasm in urinary tract; tumors of the upper digestive tract and retinal damage in sheep; thimainase causes vitamin B1 deficiency resulting in neurotoxicity in mon