http://aggie-horticulture.tamu.edu/...rces/common-poisonous-plants-and-plant-parts/
Jimson Weed (Thorn Apple)
All parts
Abnormal thirst, distorted sight, delirium, incoherence and coma. Common cause of poisoning. Has proved fatal.
Black Locust
Bark, sprouts, foliage
Children have suffered nausea, weakness and depression after chewing the bark and seeds.
Oaks
Foliage, acorns
Affects kidneys gradually. Symptoms appear only after several days or weeks. Takes a large amount for poisoning.
Golden Chain
Bean-like capsules in which the seeds are suspended
Severe poisoning. Excitement, staggering, convulsions and coma.
May be fatal.
Wisteria
Seeds, pods
Mild to severe digestive upset. Many children are poisoned by this plant.
Lily-of-the-Valley
Leaves, flowers
Irregular heart beat and pulse, usually accompanied by digestive upset and mental confusion.
Autumn Crocus, Star of Bethlehem
Bulbs
Vomiting and nervous excitement.
Monkshood
Fleshy roots
Digestive upset and nervous excitement.
Larkspur
Young plant, seeds
Digestive upset, nervous excitement, depression.
May be fatal.