MACLOSKIE I CORNACE/E. 643 



umbels or yellow flowers, having neither involucre nor involucels. Fruit 

 dorsally flattened, with lateral wings. 

 Species 14, Eurasia. 



PASTINACA SATIVA Linn. 



A meter high, root fleshy ; plant glabrous or slightly hairy. Umbel-rays 

 7-15, slender, the pedicels very slender. 



(Eur. and cultivated in U. S., naturalized); N. Patagon., islands in Rio 

 Negro (escaped). 



19. DAUCUS Linn. Carrot. 



Mostly hispid-pubescent herbs, with pinnately decompound, finely 

 divided leaves, and compound umbels of white or reddish flowers, having 

 involucres of pinnatipartite leafy bracts, and involucels of entire or toothed 

 bracts. Calyx-teeth obsolete. Petals apically inflected, larger towards 

 margin of the umbel. Fruit oblong, with barbed prickles on the winged 

 secondary ribs. 



Species 25, widely dispersed. 



I. D. AUSTRALIS Poepp. 



Stem simple, hispid, the hairs in the lower part reflexed. Leaves bipin- 

 natisect, hispid ; the segments many-cleft ; their lobules acute, short. In- 

 volucre multifid, almost surmounting the dense few-rayed umbel. Prickles 

 of fruit apically glochidiate. Flowers small, probably yellow ; whole plant 

 also of yellowish hue. 



(Chili) ; S. Patagon. ; W. Patagon., on steppes and upwards in the 

 Aysen Valley. (Dusen.) 



2. D. PUSILLUS Michx. 



Stem retrorsely hispid at the base, scabrid upwards. Leaves bipinnati- 

 sect, scabrous, the segments divided into linear subsegments. Involucral 

 leaves pinnatifid, as long as the small umbel. Prickles of fruit as long as 

 its breadth, apically glochidiate. 



(S. United States) ; N. Patagon., at confluence of Rivers Limay and 

 Neuquen. 



Family 82. CORKAGES. Dogwood Family. 

 Mostly woody plants, with simple penninerved exstipulate leaves, and 

 flowers in the Patagonian species dicecious, racemed and 5-merous. Petals 



