[13] 



Fruits (continued). 



100 



FLOWERING PLANTS 



IV. SYCAMORE (Acer pseudo-platanus). 



A . Make a sketch of the ripe dried fruit. 



B. Dissect one of the fresh half-fruits to shew the thin testa and the green coiled embryo. 



C. Make a drawing of a section through the ripening ovary of the flower of Sycamore. Note the two ovules 

 in each loculus, and also the outgrowths which become the wings of the fruit. 



V. DANDELION (Taraxacum officinale) (Composite). 

 Sketch a fruit of Dandelion to shew the pappus. 



VI. HERB BENET (Geum urbanum) (Rosacece). 



A. Sketch a fruit-head cut in half longitudinally, to shew the numerous achenes borne on the receptacle. 



B. A single fruit (achene) shewing the hooked style, and the stigma which breaks off. 



VII. SHEPHERD'S PURSE (Capsella). 



Sketch various embryos under a high power illustrating different stages in development ; note the suspensor. 

 the young spherical embryo and an older embryo shewing the two cotyledons. 



