Class V. Order II. 113 



adult, and its more pinnatifid leaves, make it distinguishable at 

 sight. Stem, stalks and veins, clothed with divergent hairs at 

 all periods. Leaves resembling those of the foregoing species, 

 but always more deeply cut, and covered with scattered hairs. 

 General involucre of two or three leafets, deciduous. Partial 

 involucre of five oval acuminate leafets. Barren flowers central ; 

 fertile ones four or five external. Fruit stipitate and bristly as 

 in the last, but differing in the styles which are pyramidal or 

 ovate, only half as long as in the last, and appressed so as to 

 form one point, instead of diverging. Woods on the Concord 

 turnpike. June. Perennial. 



The difference of this species was first pointed out to me by 

 Dr. Martyn Paine, in specimens sent from Montreal. 



122. PASTINACA. 



PASTINACA SATIVA. Parsnip. 



Leaves simply pinnate, pubescent underneath. 



The parsnip in its wild state is abundantly naturalized in 

 waste grounds. The root is materially changed by difference of 

 soil. It becomes strong, acrid and virose. Stem three or four 

 feet high, smooth, angular. Umbels with yellow flowers and 

 large flat fruit. July. Biennial 



123. SMYRNIUM. 



SMYRNIUM AUREUM. Golden Alexanders. 



Leaves twice ternate, leafets ovate-lanceolate, ser- 

 rate ; rajs of the umbel short. 



Syn. THAPSIUM AUREUM. Ntttt. 



About two feet high. General involucre none, partial involu- 

 cre of about three short lanceolate leafets on one side. Flowers 

 orange yellow, in umbels of moderate size. Fruit oval with 

 membranous ridges. At Walpole, New-Hampshire. June. 



124. ^THUSA. 



-&THUSA CYNAPIUM. L. Fools Parsley. 



Leaves similar, bipinnate, leafets pinnatifid. 



This plant has at first sight considerable resemblance to Co- 

 mum maculatum. although smaller, and has been often gathered 

 jr. 



