Window flowers

David Ehrlich
Sat, 06 Nov 2010 10:38:40 PDT
Alberto Castillo wrote >  The bottom of the cup is more clear in several species 
of Cypella and may be seen as a circle of light  by the insect flying downwards 
to the flower.                         

Or, I guess, by beetles underneath. 

Thank you very much Alberto.  This explanation makes a great deal of sense.

David E.

More information about the pbs mailing list