162 GROWTH AND WORK OF PLANTS 



256. The flowers are in dense terminal racemes, with 

 pedicels 3 to 5 mm., each flower arising in the axil of a slender 

 acuminate green bract. The white or greenish-white flowers, 

 with the orange yellow "palate" of the corolla, are very striking 

 and gave rise to the name " butter and eggs." 



257. The calyx consists of five sepals, which are green, nor- 

 mally acuminate and coalesced at the base by their edges. When 



Fig. 119. 

 Flower detail of "butter and eggs" (Linaria vulgaris). 



the sepals are coalesced the calyx is said to be gamosepalous. 

 Here it is deeply divided into five lobes showing clearly the five 

 sepals. 



258. The corolla is irregular, that is, the petals or their lobes 

 are of unequal size. The petals are coalesced, and the corolla is 

 therefore gamopetalous. The corolla is also two-lipped (bilabi- 

 ate), as can be plainly seen from a side view. The two upper 

 petals form the upper lip, and a short notch or incision indicates 

 the two petals. The lower lip consists of three petals which are 



