PART IIT. | THE MECHANISMS OF FLOWERS. 189 
ripen. In the bud, they are already on the point of dehiscing, while 
those of the inner whorl have attained scarcely a quarter of their 
_ full size. The ten stamens, and the style, which projects far beyond 
_ them, are all inclosed by the carina, whose two petals cohere along 
_ both their upper and lower margins. As the four superior anthers 
of the outer whorl dehisce introrsely and then wither, their pollen 
remains lying above the style, which courses along the lower edge of 
Fie. 62.—Genista tinctoria, L. 
, —Essential ge from a young bud. 
- 2.—Position of the parts inclosed in the carina of a young (virgin) flower. 
i —Inner view of right ala. 
4.—Exploded flower. 
5.—Young (virgin) flower, from above, after removal of calyx and vexillum. 
6.—Ditto, after the carina has been cleft to near its apex by pressure, from above. 
7 —Young flower, from above, after removal of vexillum and ale. 
8.—Anterior half of a young flower, cleft so far that explosion must result; from above, twice 
as iach magnified 
; a, coluinn ; b, the four outer stamens, which remain short (2, 4, 8, 10, in Fig. 3 ce, the five 
inner stamens qa. 3, 5, 7, 9); d, the stamen of the outer whorl which remains below the s tyle; e, tip 
of style; f, stigma : 9; pollen ; h, lateral fold of carina into which a fold (h’) of the corresponding 
ala fits ; kl, non-coherent part "of the upper borders of the carinal petals; m, ala; n, carina, ends of 
f laments ; q empty, shrivelled anthers ; 7, pollen; s, stigma; ¢é, claws of ale. 
_ the carina, and it gets pushed forward into the apex of the still 
elongating carina by the inner stamens which quickly extend 
beyond the now empty outer stamens. The inferior stamen of 
the outer whorl (6 in 1, Fig. 62), which lies immediately below the 
‘Style, remains closed when the other four dehisce, and it grows to the 
ame length as the five inner stamens and dehisces with them. 
