[OGD] Environmental change

I have to agree. If there were no humans on the planet, more than likely, species and probably entire genus's(sp?) would still cease to exist. New ones would come along. Granted, wholesale destruction of habitats by humans is, in no way natural, and I believe we should attempt to limit it if

Re: [OGD] Roots

On the question of sugary exudates external to the orchid flower, I have always assumed they function to attract ants to the orchid plant and/or flower. The ants, in turn, would then protect the orchid from herbivorous insects. (I believe a similar situation can be found in the peony.)

[OGD] Miltonia 'cele hinsdale'

I'm helping a friend learn about the intricacies of classification by tracking down the ancestry of Miltonia 'Cele Hinsdale' (purchased at Hausermann's) I must have picked a bad example because I've gotten nowhere at the RHS website or anywhere else I tried. (I'm assuming this is actually a

[OGD] Orchid flower co-evolution

Thank you, Steven, for enlightening me about orchid-pollinator co-evolution (or lack thereof). I also want to thank Finn Rasmussen for providing the answer I was looking for. Steven, you cited Angraecum as a possible example of co-evolution. Rebecca Northen suggests that bees visit the

[OGD] Evolution of Ludisia

I have to agree with one of my colleagues when he said, I agree that religion is important in society but I reject the underlying premises. Go Darwin. Speaking of the evolution of orchids, I am familiar with the co-evolutionary pollination strategies which account for the structures of many