Equisetum arvense (common horsetail)

c. 1890

Historical Brendel Plant Models, Botany Department, University of Otago

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Equisetum arvense or common horsetail is a plant native to the Northern Hemisphere which was accidentally introduced to New Zealand in the early 1920s. It is listed on the Ministry of Primary Industries Biosecurity website as an ‘unwanted organism’ and is poisonous to livestock. This model shows one of the plant’s fertile shoots with a spore cone or strobilus at the top.