Poison Ivy and Poison Oak are commonly known plants that cause significant discomfort from skin irr

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Station 2 Poisons/Poisonous Plants
Some plants have toxins that can be poisonous to
humans if ingested or touched.         Plants
extracts have been used as arrow poisons,
emetics, diuretics, and heart tonics. Plants
containing cardiac glycosides have been used as
poisons and heart drugs since at least 1500 B.C.
        Some plants contain chemicals called
cardiac glycosides, which can have beneficial or
toxic effects on the heart. Negative effects
include heart problems and a severe stomachache.
However, they are also used in modern treatment
of congestive heart failure. They are a good
example of the dose makes the poison. Examples
of cardiac glycosides include Oleander, an
evergreen shrub with large pink or white flowers,
Foxglove and Lily-of-the-Valley.
        Poison Ivy and Poison Oak are commonly
known plants that cause significant discomfort
from skin irritation and rashes.         
Mushrooms grow in many areas of the country some
are poisonous and can be fatal if eaten. Only
experts in mushroom identification can tell the
difference between poisonous and safe mushrooms.
Do not eat wild mushrooms.  
        Hemlock is a member of the plant family
that includes parsley, parsnip, fennel, and
carrot. These plants have an acrid, watery juice.
In proper doses it is a valuable medicine.
However, Hemlock also contains a volatile, oily
alkaloid, which is poisonous.  
http//www.vet.purdue.edu/depts/addl/toxic/plant28
.htm
Written by Kathy Dougherty Created by Michelle
Horner
http//www.vet.purdue.edu/depts/addl/toxic/plant52
.htm