MONOCOTYLEDONS AND DICOTYLEDONS 



261 



with one or more of the parts, the Dicotyl number (five) 

 appears (Figs. 243, 245), but with no special constancy. 



In certain genera of the buttercup family {Ranuncula- 

 cew) zygomorphy appears, as in the larkspur {Del^^ihininm) 

 with its spurred petals and sepals (Figs. 244, 245), and the 

 monkshood {Aconitum) with its hooded sepal ; and in the 



Fig. 240. The common cabbage (Brassica), a member of the mustard family: A, 

 flower chister, showing buds at tip, open flowers below with four spreading petals, 

 and forming pods below; B, mature pod, with the persistent style; C. pod opening 

 by two valves, and showing seeds attached to the false partition.— After Warming. 



water-lily family (Nymphceacea') and poppy family {Papa- 

 veracece) syncarpy appears. In this alliance, also, belong 

 the sweet-scented shrubs {Calycanthus)^ with their perigy- 

 nous flowers containing numerous parts (Fig. 206). 

 35 



