1913-14.] BOTANICAL SOCIETY OF EDINBURGH 297 



amount of variation in the length of the laminae, longer 

 and shorter as a rule alternating. The base of the calyx is 

 very woolly. From this point there arise, in the majority 

 of specimens, small reddish cylindrical papillae which vary 

 in length from 1 to 20 mm., and in diameter from "5 to 

 •75 mm. They arise in line with the sepal or are inter- 

 sepaloid in origin. They are downwardly directed, being 

 either free or fused tor part or the whole of their length 

 to the peduncle. The tip is slightly invaginated. On 

 sectioning they are found to be solid and to consist of 

 loose spongy parenchyma. Except for the presence of two 

 nuclei in certain cells, the tissues are perfectly normal. 



In the corolla likewise there is variation in the tloral 

 number, and. as in the calyx, six is most usual. Where 

 dedoublement occurs, the laminae, in addition to the sepal 



- s 3 may be connate. In one specimen, however, the 

 corolla tube was split posteriorly along its whole length. 

 There is a marked tendency to phyllody along the petal 

 margins, but in no case has the whole petal become 

 leafy. The plane of symmetry is interpetaloid. The 

 bending of the corolla-tube is accompanied by transverse 

 wrinkling along the anterior, it . the concave surface. On 

 the posterior surface the cells have undergone stretching 

 growth, and are elongated and more or less rectangular, 

 while anteriorly the tis-ues appear correspondingly com- 

 pressed This is indicated by the external wrinkling 

 referred to. and by the shape of the cells, which are short 

 and oval. Sometimes on the anterior surface there occur 

 longitudinal ridges, reddish in colour and woolly. These 

 run the whole length of the corolla tube and extend 

 half-way or to the tip of the lamina. They are due to 

 proliferation of the mesophyll. some cells of which are 

 pigmented. 



The androecium shows a -light tendency to dedouble- 

 ment and to phyllody. The filaments vary in length, but 

 this variation is not correlated in any way with the floral 

 zygomorphy. 



The gynoecium is normal, except that the style is some- 

 what short, being shorter than the usual short-styled type. 

 and bent anteriorly parallel to the line of curvature of the 

 corolla. Sectioning revealed no abnormality either in ovary 



