74 



NATURAL ORDERS. 



COMPOSITES. Herbs, rarely shrubs or trees. Inflorescence a capitulum. Floral 

 formula K 0, C (5), A (5), G (2). Calyx sometimes forming a pappus. Carpels with two 

 stigmas, unilocular ovary and single ovule Fruit a cypsela. 



135. Inflorescence. Draw examples of the three types of capitula : 



(a) Composed entirely of tubular florets. 



(b) Entirely of ray florets. 



(c) Of both types. 



136. Flower. Isolate and draw examples of disc and ray florets. Cut open the 

 corolla of the former and make a drawing to show the arrangement of the andrcecium 

 and gyncecium. Construct a floral diagram. 



137. Fruit. Draw the examples provided, showing presence or absence of pappus. 



