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John Amato | all galleries >> Pohnpei, Micronesia -FSM- 2010, 2011 >> Plants, fungi, plant disease, insects and the use of herbicides and pesticides, Pohnpei, Micronesia. > 4. Apocynaceae
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4. Apocynaceae

4. Apocynaceae

"Pollination is by bees. It is a complex process.

The 5 stamens and 2 stigmas in each flower are fused to form a single structure, called "Gynostegium."

The pollen grains in each anther are enclosed in a sac called "Pollinium". There are 5 pairs of pollinia per flower. Each pair of pollinia is connected to a sticky disc.

As the bees crawl around the gynostegium, the discs get attached to their legs. In the next flower visit, the pollinia are transferred."

The above information via email:

Kanchi N. Gandhi, Ph.D.
Harvard University Herbaria
22 Divinity Ave
Cambridge, MA 02138

Calotropis gigantea

This specimen was approximately 7 feet tall. Leaves slightly pubescent and fleshy.

other sizes: small medium large original
John Amato11-Aug-2010 09:56
It is in the Apocynaceae.
Muru 11-Aug-2010 05:48
It's a member of Asclepiadaceae family, not Apocynaceae
John Amato10-Aug-2010 11:10
Muru, thank you for the identification. John
Muru 10-Aug-2010 05:16
This is Calotropis gigantea R. Br. (Crown flower)
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