0>' THE FEBTILIZATIOJ* 



2>. 



1-23 mm. 



, Tott l beigbt of flower from We of pedacel to BUgma . • ^ ^ 



U«M from base of pedicel to top of ovary. . . • • -484 mm. 



i3«t breadth of flower, including the penanth . ■ ' ' <, 4 , 7 mm 



Length of style along inner s;de 



6. Average me 



asuroments of largo pedicellate flowers 



anth 



Total height from base of pedicel to stigma 



iei.ht from base of pod-el to origin of penantn • -^ 



HeiKht from origin of perianth to ovary • ^ 



1*5 mm. 



04 to 05 mm. 



Height from base of ovary to its summit 



Length of style along inner side '[[[.... 0-2 



Breadth of stigma 



mm. 

 mm. 



0-48 mm. 



mm. 



by vanat.ons in tM ien* ^ ^ g . de ^ attachment, and two narrow ones 



}«Ming upwards, onu uu ^ . - ., „ vnrv an d that of the large one curves 



r;, c ySS^ nvexVlate £* 4 ; Plate IV, fig. 19). The stigma is trumpet- 



t f o7in ^o°«i furrowed. The bottom of the hollow commun.cates by a sma 1 



X .with a canal which descends through about three-fourths of the length of the style 



SLin as it does so and coming to a pointed end at some distance from the ovary 

 P t0 IV fi* 19). The lower fourth of the style is solid throughont. Its external surface 

 1 te smooth throughout. The stigma and the upper portion of the styles have a more or 

 pro ounced pink tint, due to the presence of varying numbers of coloured cells; the 



ovary ami perianth are colourless. ._ . 



The ovary externally is broadly oval, and its cavity is almost circular (Plate IV, fig. 19) 

 Its walls vary greatly in thickness in different parts, being much thickest along the side 

 of stylar insertion, thinning off thence in every direction, and becoming very thin on the side 

 oppo8ite to the style. The following figures show the thickness of the walls at different 



points in one flower 



Thickness at origin of the inner side of the style 0*05 mm. 



Thickness over the middle of the summit of the ovary 0'04 mm. 



Thickness over surface of ovary on the side opposite that of stylar 



attachment 



0-015 



Along the inner side of the base of the style and the neighbouring areas of the ovarian 

 wall the epidermal cells are shortly columnar and have somewhat thickened walls (Plate IV, 

 fi . 19). Further out they become thin-walled and squarish, and over the rest of the surface 



pt the basal portions, where they again tend to become cylindrical, they are more 



flattened. There are four distinct layers in the thickness of the walls (Plate V, fig. 22). 

 Immediately beneath the outer epidermis is a single stratum of flattened cells, which at this 

 stage stain like the epidermal ones ; beneath it is a thick layer of four cr five superimposed 

 strata of small cells, which take a pink tint with picrocarmine, and within this is the inner 



epidermis, the flattened cells of which, like those of the outer epidermis and hypodermis, are 



stained yellowish. 





