Equis ISSN 2398-2977

St John's wort (Hypericum perforatum)

Synonym(s): Amber, Klamath weed, goatweed

Introduction

  • St John's wort   St Johns wort (Hypericum perforatum)  is found in grassland, hedges and open woods.
  • An erect perennial growing to 80 cm, with bright yellow flowers in a flat-topped cluster.
    Geographical distribution
  • North America and Europe.

Toxicity

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Clinical signs

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Treatment

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Further Reading

Publications

Other sources of information

  • Allison K (1999)A guide to Plants Poisonous to Horses.J A Allen & Co Ltd. ISBN 0851316980.
  • Burrows G E & Tyrl R
  • Burrows G E & Tyrl R J (2001)Toxic Plants of North America.Iowa State University Press, Ames, Iowa.
  • Allison K & Day C (1997)A Guide to Plants Poisonous to Horses.British Association of Holistic Nutrition and Medicine.
  • Cooper M R & Johnson A W (1998)Poisonous Plants and Fungi - An Illustrated Guide.The Stationery Office. ISBN 0112429815.

Organization(s)

  • Cornell University- Poisonous Plants Informational Database. Website: www.ansci.cornell.edu/plants.
  • ToxicologyOnline.com.Website:www.toxonline.com.
  • Veterinary Poisons Information Service (VPIS), London Center, Medical Toxicology Unit, Avonley Road, London SE14 5ER, UK. Tel: +44 (0)20 7635 9195; Fax: +44 (0)20 7771 5309.
  • Veterinary Poisons Information Service (VPIS), Leeds Center, The General Infirmary, Great George Street, Leeds LS1 3EX, UK. Tel: +44 (0)113 245 0530; Fax: +44 (0)113 244 5849.


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