I just received unconfirmed news the Dr Christensen has passed away. His passing represents a great loss to the orchid world in general and the AOS in particular. I took him to the airport this January after a talk on Peru that he gave us. He did not look well then, very short of breath after minimal exertion.

Here is what someone wrote about him:

A world renowned research taxonomist and orchid-lover, Dr. Eric Christensen has given much to the orchid world. His field work has extended throughout vast areas of South America and he has worked closely with David Bennett of Lima, Peru to produce an inventory of Peruvian orchids. This study has produced over 100 new species discoveries. He is a prolific author with over 300 publications to his credit. He is known for aiming to bridge the gap between taxonomy and horticulture and is a strong advocate for conservation - including ex situ conservation.

Besides his extensive knowledge, I appreciated his self depreciating humor and sharp cynicism.

Nick