MORPHOLOGY AND ECOLOGY OF THE FRUIT 247 



Scilla, except that it is supposed to have a distinct calyx and 

 corolla, b is not like any of the flowers studied, but is 

 nearest like the Hyacinth except for the distinct calyx and 

 corolla, c is like the Snowdrop, and d like the Fuchsia. This 

 morphology differs much from that in use in the manuals, 

 but is more nearly correct, as shown by embryological studies. 



XVII. The Morphology and Ecology of the 



Fruit 



67. What is the exact structure and morphological 



composition of the six dry fruits supplied ? 



(1) What has become of each of the parts 



of the original flower, i.e. sepals, petals, 

 stamens, receptacle, ovary, style, and 

 stigma ? 



(2) How are the carpels or receptacle modi- 



fied and arranged to form this fruit ? 



(3) What is the morphology of the new or 



accessory parts, wings, etc. ? 



(4) In what places, morphologically, is the 



dehiscence ? 



(5) How are the seeds probably scattered ? 

 Answer by diagrams and drawings as far as possi- 

 ble. Under (2) bring out the leaf or 'Stem 

 homology in each case. 



68. What is the exact structure and morphological com- 



position of the six fleshy fruits supplied ? 

 Answer as for Exercise 67. 



