corolla color change

[Thomas Schlemmermeyer]

Hello,

On Wed, 17 Dec 1997, Rod Seppelt wrote:

> Is this a possible mechanisms for the "host" plant advising potential
> pollinators to concentrate their efforts on non-pollinated flowers - i.e.=
,
> a way of oprimising reproductive success.  If so, it is an interesting
> evolutionary development - the possibility of flowers that think!!

Here in Brazil there is a famous tree of the family Melastomataceae (I thin=
k
actually a whole bunch of different species).
They change their corolla colour as well. I didn't observe it, whether it=
=20
goes from pink to white or from white to pink.
But the trees look always bi-colored because of this.
This Bi-coloration makes any evolutionary sense?

Thomas
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Thomas Schlemmermeyer
Museu de Zoologia, Universidade de S=E3o Paulo
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S=E3o Paulo, SP, Brasil

Resid=EAncia:
Thomas Schlemmermeyer
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CEP 14001-970
Ribeir=E3o Preto, SP, Brasil

Fone, Fax: 016 6371999
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