EARLY SUMMER FLOWERS 



219 



FIG. 99. Flower of the Bugle seen from 

 the side. (After Baillon.) 



tube almost one-third of an inch in length. This is somewhat 

 widened at the lower end within the calyx, and at the free end 

 is divided into two lips of very unequal size. The upper or 

 posterior lip is very short, and 

 is formed of the projecting tips 

 of two petals, which can be 

 distinguished as small rounded 

 lobes. The lower lip, on the 

 other hand, extends in front of 

 the tube as a three-lobed expan- 

 sion of considerable size. The 

 lobing indicates the three petals 



of which it is composed ; the large petal forming the middle lobe 

 is notched. The whole corolla is of a bright blue colour, some 

 of the veins on the lower lip being a darker blue. 



As in the Dead-nettle, there are only 

 four stamens, the stamen which might be 

 expected to alternate with the posterior 

 petals being completely absent. In the 

 Bugle, owing to the shortness of the upper 

 lip, the stamens project beyond it, and 

 are visible from the outside of the flower. 

 They form two pairs, a longer and a 

 shorter, so that two of the anthers stand 

 in advance of the other two. All the 

 anthers face downwards. On slitting up 

 a corolla-tube the filaments will be found 

 ^ , to be attached to the inside of this. The 



FIG. TOO. Pistil of the Bugle 



showing the four-iobed anthers, which project clear of the upper 

 ovary, the style and the ^p^ a t first stand close to the middle line, 

 two - lobed stigma, in Behind the stamens is the forked stigma 



front of the ovary is the ? 



nectary. (After Baillon.) which ends the long style. If a corolla is 

 carefully pulled away from the rest of the 



flower the style will be left in position, and will be seen to spring 

 from the middle of four green shining bodies (Fig. 100). These 

 are the four lobes of the ovary, and each encloses a single ovule. 

 As the stigma, with its two lobes directed forwards and back- 

 wards, indicates, these lobes are derived from two carpels, as in 



