OF NORTH AMERICA. 27 



marginate of white, partial subulate marginate, 

 seeds echinate. This is the most common sp. 

 from Canada to Louisiana in fields and woods, 

 nearest to D. carotta, but yet different. Root 

 biennial odorous fulvous slender, stem 1 to 3 

 feet high, leaves 3 to 6 inches long, large umbel 

 lax at first, contracted at last. Some varieties 

 or deviations. 



1. Var. Fumaroides. Lower leaves like 

 Fumaria 4pinnate segments confluent, some in- 

 volucres simple. 



2. Var. Asper, stem very scabrous, leaves 

 shorter 2-3pinnate. 



3. Var. Laxifolius, nearly smooth, leaves 

 with remote folioles. 



It will be sufficient to compare carefully these 

 American sp, with the European to perceive 

 their distinctions. There are at least 6 sp. in 

 Europe blended in !>. carotta \ or the garden 

 kind native of the South, so easily known by 

 large succulent root, stem hirsute deeply groo- 

 ved, petiols carinate, broad decompound leaves, 

 pinnate involucres &c they are D. maritimus. 

 polygamous, exiguus, see Pers. Wild. Lam. 

 ^c besides the 2 next, now before me, 



791. DAUCUS STRIGOSUS R. strigose covered 

 with white bristly hairs, stem grooved, leaves 

 subsessile, pinnate and bipinnate, folioles oblong 

 laciniate or pinnatiiid acute, involucres pinnate 

 broad with a thick margin, partial simple lan- 

 ceolate. A very distinct sp. sent me from Eng- 

 land as a wild carrot, the hairs are thickly sot 

 stiff and flat, petals radiate. 



792. DAUCUS AGRESTIS R. stem grooved sca- 

 brous, leaves remote subsessile base winged 

 pinnate or bipinnate, folioles pinnatifid, seg- 

 ments oblong cuspidate ; involucres pinnate or 



