derfully variable in - ipe and oolor of leaf and stem, has an 



abundance of milky juice that is quite irritating. The Eupho 

 1.. is another Bpecies having the same effeot 



I. i.l\ s Slipper*. 



ie of the orchids prodace unpleasant effects, and the writer can 

 share in this having occasion to collect five hun- 



dred F the large lady's slipper C Walt), hia 



hands became much inflamed and the poison finally extended to the 

 face and eves. At the time the trouble was assigned to the poison 

 ivy. but since the careful investigation of Dr. MacDougal, of the 

 University of Minnesota, the orchid is credited with the cause of the 

 particularly - .':>le experience. 



The plants are provided with glandular hairs, containing a poison- 

 th an action similar to the toxicodendrol of the /.' 

 1.. 

 Other member of the genus, as the yellow lady's slipper (C. hir- 

 Mill.) and small lady's slipper (C. parviflorum Salisb.), are 

 likev - poie J to the touch. 



MANY SOMEWHAT POISONOUS PLANTS. 



Among the trees the catalpa (Caicdpa Catalpa 1.. I and ailanthus 

 -: produce emanations that are disagreeable 

 and Bometin - - '.lie Bowers of the former when handled 



will produce an irritation of the skin. A friend informs me that 

 in working in - range ( 7 Raf. hedges he 



has suffered considerably, and when the thorn pierces the skin it 

 leav -oned wound. The generic nan; - -ts toxic proper- 



The young leaves of the red cedar J 1. 



and ari L. are irritating to the .-kin and 



may even produce while the pitch of the spruce / 



isee ." hing. Balm of < rilead P 

 Lit . while having healing virtues, may alt ring. 



The green bark of the hercules club I Li- irritating 



to the skin; the hei f oleand 1. aff< 



some persons similar to poison ivy, while the bark of dap] 



I. causes and the juice <>f the box 



i-ervirens 1. produces an itching with many ; 



♦Bulk- Part I , Minnn-ot* Botanical StuJit- 



