IMPORTANT POISONOUS PLANTS 123 



This plant occurs in swamps in the Northern States and is the most 

 poisonous species. 



Rhus Rydbergii Small. Poison Ivy. 



This plant is common from Montana and British Columbia to Colorado and 

 Nebraska. It is poisonous to touch. 



Rhus diversiloba Torr & Gr. California Poison Ivy. 



Common on the Pacific Coast. It is poisonous to the touch. 



Celastraceae. Bitter Sweet Family. 



Euonymus atropurpureus' Jacq. Burning Bush, Waahoo. 



The European species has long been regarded as poisonous. 



Celastrus scandens L. Climbing Bittersweet. 



The aril is red and has a somewhat disagreeable, sweetish taste. The 

 leaves are said to be poisonous to horses. Bittersweet is quite widely dis- 

 tributed in Eastern North America. 



Aquifoliaceae. Holly Famity. 



The berries of the European Ilex Aquifolium commonly cultivated in the 

 East are said to be poisonous. This plant is called Poison Berry. The Ilex 

 Cassine Yaupon or Black Vomit may be poisonous. This occurs from Vir- 

 ginia to Texas. 



Hippocastatiaceae. Buckeye Family. 



Aesculus Hippocastanum L. Horse-Chestnut. 



The seed of this species has long been recognized as poisonous in Europe. 

 Frequently cultivated in the U. S. It contains aesculin, and argyraescin. 



Aesculus glabra Willd. Ohio Buckeye. 



Found in Southern Iowa, along river courses as far north as Fort Dodge 

 and common South and East. Cases of poisoning have been reported, especially 

 where cattle eat the young shoots and seeds of the plant. 



Aesculus Pavia L. Red Buckeye. 



Common from Virginia to Missouri. 



Aesculus octandra Marsh. Buckeye. 



Common Southward. 



Aesculus californica (Spach.) Nutt. California Buckeye. 



The leaves and fruit of this tree are regarded as poisonous to stock. The 

 California Buckeye especially is said to cause abortion. 



Sapindaceae. 



Many members of this family are poisonous ; among them several species of 

 Paulinia sometimes cultivated in North America; also a species of the genus 

 Sapindus. One species occurs in the Southern States, S. marginatus, known as 

 Soap-tree or Soap-berry. 



Balsaminaceae. 



Impatiens fulva Nutt. Spotted Touch-me-not. 



Widely distributed in the Northern States, especially on low grounds. The 

 leaves are acrid and the plant is suspected of being poisonous to live stock. 



The cultivated /. Noli-tangere is alterative and is regarded with suspicion. 

 The exotic L Royalii is considered poisonous. 



Rhamnaceae. 

 Rhamnus cathartica L. Buckthorn. 



