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The Extrafloral Nectaries of Ipomoea carnea (Convolvulaceae)
Kathleen H. Keeler
American Journal of Botany
Vol. 64, No. 10 (Nov. - Dec., 1977), pp. 1182-1188
Published by: Botanical Society of America, Inc.
Stable URL: http://www.jstor.org/stable/2442480
Page Count: 7
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Ipomoea carnea (Convolvulaceae) possesses two types of extrafloral nectaries, located on the petiole and on the pedicel. These secrete a complex nectar containing sugars and amino acids. The insects attracted to the extrafloral nectaries are predominantly ants and they are relatively abundant throughout the year. A number of incidents of plant defense as a result of the presence of extrafloral nectary visitors at the extrafloral nectaries of I. carnea were observed and are consistent with the ant-guard theory of the function of extrafloral nectaries.
American Journal of Botany © 1977 Botanical Society of America, Inc.