MARSH CALL A. 



77 



case, bears both stamens and pistils, and most of the 

 lower flowers, if not all, are perfect ; 

 sometimes the upper ones consist of sta- 

 mens only. Fig. 100 shows one of. the 

 perfect flowers much enlarged. The sta- 

 mens, it will be observed, have two-celled 



Fig. 100. 



anthers, opening lengthwise. 



MAESH CALLA. 



99. These two plants, Indian Turnip and Marsh Calla, 

 are representatives of the Order Aracece. The characters 

 which distinguish it are very well displayed in the two 

 types we have selected for examination. The great feature 

 is the aggregation of the flowers on a spadix. Generally, 

 though not invariably, a spathe is also present. Among 

 wild plants the Skunk Cabbage and Sweet Flag (the latter 

 without a spathe) are common Araceous types, while the 

 familiar green-house and window plant, known as the 

 Calla-Lily, will serve very well for examination in winter. 

 It may be added that the plants of this Order have a very 

 acrid juice. 



Fig. 100. Perfect flower of Calla. 



