43. 



pound leaves; bracts surrounding the flowers leaf -like; white 

 flowers in umbels becoming concave. This plant with a straight 

 tap root has been widely distributed with clover and alfalfa. It 

 is one of the most pernicious weeds of the eastern meadows. 



Bull thistle (Cirsium lanceolatum). A troublesome biennial weed common 

 in woods, pastures and along roadsides. (U. S. Dept. Agr.) 



COWBANE. WATER HEMLOCK (ClCUta maculatd L.) 



It is a smooth marsh perennial two to five feet high with pin- 

 nately compound leaves two or three times pinnate; the leaves 

 have long petioles, the coarsely serrate leaflets are lanceolate to 

 oblong lanceolate one-fifth inch long. Stalks of the umbellets 

 numerous and unequal. Flowers white, fruit broadly ovate to 

 oval, small one and one-half inches long. Grows in marshes 

 and in low grounds. The stems spring from thick fleshy under- 

 ground roots that taper at the lower end. These usually number 

 from three to five, but single specimens are also met with. On 



