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Dichromena ciliata, a Noteworthy Entomophilous Plant Among Cyperaceae

E. E. Leppik
American Journal of Botany
Vol. 42, No. 5 (May, 1955), pp. 455-458
Stable URL: http://www.jstor.org/stable/2438794
Page Count: 4
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Dichromena ciliata, a Noteworthy Entomophilous Plant Among Cyperaceae
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Abstract

According to a study performed in the Tropical Research Institute at San Salvador, a number of insects have been recorded which act regularly as carriers of the pollen of Dichromena ciliata. This is a rare case of insect pollination among Cyperaceae. White bases of the upper leaves function as petals, imitating a white corolla of an ordinary flower. This structure is clearly distinctive and attracts pollinators from a considerable distance. Stingless wild bees, bumblebees, and honeybees were regular visitors, but no moths, butterflies, or flies were recorded on Dichromena (table 1). Selective activity of pollinating insects is demonstrated in the observable tendency of the development of the Dichromena involucre toward the white corolla of a simple flower type (fig. 1).

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