I03 



more than a rosette of leaves. So it seems definitely proven 

 that the only way to have fringed gentians is to sow them in 

 favorable spots where they will not be trampled, cut off or 

 carried away. And it is particularly to be desired that the 

 earliest blossoms be left to form seed, as the later ones may be 

 nipped by frost and fail to do so. 



Elizabeth G. Britto.v 

 New York Botanical Garden. 



Some Observations on Lonicera japonica Thunb. 

 (Japanese Honeysuckle) 



The great variety of color and the fragrance of blossoms are, 

 doubtless, responsible for most people's interest in plants. But 

 in spite of the variety, the color of a given blossom usually 

 remains the same throughout its life and those most highly 

 colored often lack fragrance. So a fragrant blossom which 

 turns from white to pale yellow and then to deeper shades is of 

 special interest. 



How long does this color change in Lonicera japonica take? 

 Does the time vary and if so, what makes it vary? To try to 

 answer these questions, observations were made on 42 blossoms 

 in 13 groups of 2, 3, or 4 blossoms each. The plant on which 

 they grew was about fifteen feet high, growing against a dead tree. 

 For the lower five feet it spread to a width of about 10 feet. 

 Observations extended over a period of six days and were made 

 at first approximately at 7:45 A.M., i 45 and 7:45 P.M. There 

 was practically no rainfall during this period and the temperature 

 varied from 67 to 82 degrees Fahrenheit indoors. 



No changes occurred from 7 45 P.M. to 7 145 A.M., few changes 

 occurred from 7:45 A.M. to 1:45 P.M., most changes occurred 

 from 1:45 to 7:45 P.M. Blossoms that opened one afternoon 

 turned pale yellow the next. In only one case was there a change 

 from white to yellow in the morning, but once having turned 

 yellow they often turned to darker shades of yellow in the 

 morning. 



It was found that the time in which the blossoms change 

 from white to deepest yellow varies, being shorter when the 

 temperature is higher. 



