64 WEEDS OF THE FARM AND GARDEN 



darnel, elderberry, flax, flowering spurge, fly agaric, 

 hellebore (green and false), hemp, hogwort, horse 

 chestnut, horse-radish, horsetail, Indian hemp, In- 

 dian tobacco, Jimson weed, Kentucky coffee tree, large 

 blue flag, larkspurs, lepiota, lily of the valley, lima bean, 

 mandrake, marsh marigold, monkshood, moonseed, 

 mustard, needle grass, opium, osage orange, partridge 

 pea, pasque flower, peach, poison hemlock, poison ivy, 

 pokeweed, prickly poppy, purple foxglove, purple Jimson 

 weed, ragweed, rattlebox, rose, sleepy grass, smartweed, 

 sneezeweed, sorghum, spotted spurge, spreading dog- 

 bane, stemless loco weed, stinging nettle, stonecrop, 

 swamp camas, sweet clover, tansy, some toadstools, to- 

 bacco, tree of heaven, water hemlock, water parsnip, 

 white snakeroot, wild barley, wild black cherry, wild in- 

 digo, wild oats, wormseed, Wright's datura, yellow lady's 

 slipper, yew. 



Fig. 33b. Poison ivy (Rhus Toxicodendron), common in eastern 

 North America. Many people are sensitive to its poison. 



