Smithsonian Report, 1919.—Coville. 5 PLATE I5. 
ABNORMAL SPRING GROWTH ON A BLUEBERRY STEM, DUE TO LACK OF CHILLING. 
This photograph wastaken on May 19,1913. Growth is taking place from only one bud, the third 
from thetip. The uppermost bud isa flowering bud, the second aleafbud. Both are dead or 
dying. This plant has stood in the warm greenhouse all winter and spring. Ifit had had the 
usual two or three months of chilling, its starch would have been transformed into sugar and 
the stem would have flowered and put out new twig growth from numerous buds in the same 
manner as the stem shown in Plate 14. (Natural size. 
