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EQUISETOLOGY

(  HORSETAIL  BIOLOGY  )

Is the "informal" branch of Botany ( Pterydology ) concerned with the scientific study of Equisetum. The term introduced by Carl August Julius Milde. Formally Pterydology ( Pteridology ).

Equisetologist ( Horsetail Biologist ). Specialist in Equisetology.
Formally Pterydologist ( Pteridologist ).

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