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Colorado Experiment Station 
acteristic bunch of thick spindle-shaped roots which contain a yellow, 
gummy secretion. These are further characterized by being divided 
into chambers, hilernally. by cross-partitions. These features are 
brought out in fig. 66. Common garden parsnip (Pastinaca sativa) 
that has gone wild, and popularly known as “wild parsnip,’’ is read¬ 
ily mistaken for the water hemlock. The wild parsnip, however, has a 
single thick, fleshy root (fig. 67), and not a cluster of roots as has 
the water hemlock. These two plants are also distinguished by their 
leaves (figs. 68, 71 and 72). The leaves of water hemlock are 
doubly divided, the leaflets being finely toothed along the margin. 
The stem of cowbane (hg. 70) is smooth, that of wild parsnip 
Fiftls. 74 - 77 .- — 74 , commoi) wild parsnip (Pastinaca sativa) ; 75, tall angelica (Angelica 
ampla) ; 76, cow parsnip (Heracleum lanatum) ; 77, swamp laurel (Kalmia polifolia). 
