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Types of Flower. 



95 



FLOWERING PLANTS 



I. CYTISUS. (Papilionata.) 



A . A general sketch of the flower illustrating the form of a papilionaceous flower. 



B. Dissect the flower and make sketches of (a) the calyx, (b) the corolla, consisting of five petals the standard, 

 the two wings, the two coherent petals forming the keel, (c) the andrcecium, consisting of ten stamens, which are 

 joined together by their filaments. Slit open the staminal type to expose (d) the single carpel.; the basal swollen 

 part of pod is the ovary, the elongated portion the style ending in the stigma. 



II. DOG DAISY (Chrysanthemum sp.). (Composites.) 



A . Sketch the inflorescence of a Daisy cut in half, shewing (a) the receptacle, (b) involucre of bracts, (c) ray- 

 florets, (d) disc-florets. 



B. Carefully remove and sketch a single ray-floret, shewing (a) ligulate corolla, (b) bifid stigma, (c) ovary. 



C. Carefully remove a disc-floret (including the inferior ovary), and examine in water under the low power 

 of the microscope. Make a drawing shewing (a) tubular corolla with five lobes, (b) ovary, (c) anthers forming a 

 tube round the gynasceum, (d) the bifid stigma projecting beyond the anther-tube. Slit open a corolla, and make 

 a drawing of the free filaments of the five stamens, and the united anthers. Notice the arrangements for cross- 

 pollination. 



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