XV] CAPRIFOLIACE.E 153 



As a rule the ovary is 3-chambered and bears a single 

 style ; but there is some variability in the number of 

 carpels viz. 4 in Symphoricarpos and a tendency to 

 reduction by abortion of two carpels as the fruit ripens 

 in Viburnum. 



Moreover, while the corolla is actinomorphic and 

 regular in Sambucus, Viburnum, and Symphoricarpos, it 

 becomes 2-lipped and zygomorphic in the median plane 

 in Lonicera. 



Consequently we have, with a general conformity to 

 the epigynous, pentamerous, gamopetalous, isostemonous, 

 and syncarpous type of the Caprifoliaceous flower, re- 

 ductions to three (or four) or fewer carpels, and zygo- 

 morphy of the corolla, and the following varieties of 

 floral formula. 



K w Cj^As 0(3), e.g. Elder. 

 K (6) (7 (5) A 6 6r(4), e.g. Snowberry. 

 K ( s)\C (6) A 5 0(3), e.g. Honeysuckle. 



Departures from the type in other small details will 

 be found in Part II. 



