266 



PLANT STRUCTURES 



142. TJmbellifers. — This is the most highly organized 

 family ( UmbellifercB) of the Archichlamydeae, which may 

 be said to extend from Peppers to TJmbellifers. The Le- 

 gumes adopt zygomorphy, but remain hypogynous ; and in 

 some of the Hoses epigyny appears ; but the Umbellifers 

 with their fifteen hundred species are all distinctly epigy- 



Fig. 252. The common carrot {Daucus Carota): A. branch bearing the compound 

 umbels; B, a single epigynous flower, showing inferior ovary, five spreading 

 petals, five stamens alternating with the petals, and the two styles of the bicarpel- 

 lary pistil; 0, section of flower, showing relation of parts, and also the minute 

 sepals near the top of the ovary and just beneath the other parts. — After Warming. 



nous (Fig. 252, B, C), being one of the very few epigy- 

 nous families among the Archichlamydeae. In addition 

 to epigyny, the cyclic arrangement and definite Dicotyl 

 number is established, there being five sepals, five petals, 

 five stamens, and two carpels, the highest known floral 



