Please use this identifier to cite or link to this item: http://www.repositorio.ufc.br/handle/riufc/59068
Title in Portuguese: Male and female booths with separate entrances in the tiny flowers of Guazuma ulmifolia (Malvaceae–Byttnerioideae). I. Structural integration
Author: Westerkamp, Christian
Soares, Arlete Aparecida
Amaral Neto, Laércio P. do
Keywords: Herkogamy
Dichogamy
Myiophily
Deceptive phase
Nectar flower
Revolver flower
Issue Date: 2006
Publisher: Flora
Citation: WESTERKAMP, Christian; SOARES, Arlete Aparecida; AMARAL NETO, Laércio P. do. Male and female booths with separate entrances in the tiny flowers of Guazuma ulmifolia (Malvaceae–Byttnerioideae). I. Structural integration. Flora, [s.l.], v. 201, p. 389–395, 2006.
Abstract: In spite of their tiny dimensions (3 x 5 mm2 ), the strongly honey-scented flowers of Guazuma ulmifolia (Malvaceae–Byttnerioideae) provide six sexual chambers. A central female unit is surrounded by five interconnected male compartments. At the onset of anthesis the strap-shaped odoriferous petal appendages form an open star with the female chamber in the centre. Hereafter, they wilt, intermingle and finally lock access to the stigma. Meanwhile, wilting sepals liberate new entrances from the back between the petal claws. They give way to nectar-offering male chambers. In each of them a well-lit (but closed) window lures the visitor into a standard position for passive pollen uptake. Finally, the insects have to back out of one of the rear entrances. It remains unknown how the minute visitors (maximum height ca. 0.5 mm) – if ever – overcome the distance to another Guazuma tree.
URI: http://www.repositorio.ufc.br/handle/riufc/59068
metadata.dc.type: Artigo de Periódico
ISSN: 0367-2530
Appears in Collections:DBIO - Artigos publicados em revista científica

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