Poisonous Plants And Fungi

Literally thousands of plants and fungi contain varying amounts of poisonous substances. In many instances, the poisons are not present in sufficient quantities to cause adverse effects in humans when only moderate contact or consumption is involved and cooking may destroy or dissi pate the substance. Some plants and fungi have substances that produce toxic effects in some organisms but not in others. Ordinary onions (Allium cepa), for example, occasionally poison horses or cattle yet are widely used for human food, and poison ivy (Toxicodendron radicans) or poison oak (Toxicodendron diversilobum) produce dermatitis in some individuals but not in others. Table A3.2 and Table A3.3 include plants and fungi that are native to, or cultivated in, the United States and Canada.

Stern-Jansky-Bidlack: Introductory Plant Biology, Ninth Edition

Appendices

3. Useful and Poisonous Plants, Fungi, and Algae

© The McGraw-H Companies, 2003

Appendix 3

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