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Glossary of Plants Terms
beginning with letter U
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upas
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noun
  1. (Botany): A tree Antiaris toxicaria of the breadfruit family, common in the forests of Java and the neighboring islands. Its secretions are poisonous, and it has been fabulously reported that the atmosphere about it is deleterious. Called also bohun upas.
  2. A virulent poison used in Java and the adjacent islands for poisoning arrows. One kind, upas antiar, is, derived from upas tree Antiaris toxicaria. Upas tieute is prepared from a climbing plant Strychnos Tieute
urushiol
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noun
  1. An oil found in plants of the family Anacardiaceae, causing an allergic skin rash on contact; consists of a variable mixture of several organic compounds.

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