ALBERT AND (lABRIELLE HOWARD. 15 



(6) Leaves. — The general shape of the leaves of all the 

 types grown is very much the same throughout. They are 

 alwaj^s petiolate, var}^ in shape from subeorclate to orbicular 

 and are usually slightly asymmetric. The average length 

 of the petiole varies from 5 "5 to 9 cms. The average length 

 of the lamina varies from 18*5 to 34 cms. and t)ie ratio 

 length/breadth from '98 to ri9. These measurements, taken on 

 the 1909 crop, are only of relative value. The margin is gener- 

 ally undulate, but the amount of undulation varies and in some of 

 the types the margin is tiat and entire. The apex varies from 

 acute to rounded. The surf;dce of the leaf may be flat or various- 

 ly puckered, and the texture, which is generally thick and coarse, 

 is much finer in some of the types. The colour is usually dark 

 bluish-green, but lighter green and even 3'ellowish-green leaved 

 type.s occur. After the habit, the surface, texture and colour 

 of the leaves are the characters of grreatest value in distinouishino- 

 the races. The angle of insertion of the leaves varies considerably 

 and helps to give each type its characteristic. appearance. The 

 leaves of the inflorescence are much smaller than the lower leaves 

 and in the bushy t3^pes are merely small editions of these. The 

 j^fround leaves, as a rule, are much smaller than the rest of tliose 

 on the lower part of the plant and soon dry u]). These were 

 left out of consideration and the measurement made on the third 

 and fourth of the typical leaves. The large lower leaves pass by 

 various stao-es to the small leaves of the inflorescence. 



(c) InJJoreseeace. — The inflorescence varies from the open and 

 elongated type by every gradation to very compact and crowded 

 cauliflower-like forms. In the open elongated inflorescences the 

 flowers are often sparsely arranged : in the compact ones the 

 flowers are ver}" closely packed. 



{(I) Flowers. — The flowers of this species do not appear to 

 have been studied in any great detail. Considerable difierences 

 between the flowers of the various Indian types have been observed 

 both as regards the size and form of the various parts. As 

 regards the size of the flowers, the length with one exception is 

 practicall}'^ the same in all and only varies from 18 to 20mm. The 



