Hello Steve, John, Conrad and anyone else reading along,
I checked my database yesterday, I got the name from thesame source John quotes; A.B. Graph's Exotica; page 172 of Edition 9 tobe more exact. I will also note that the plant has been in one of twouniversity greenhouse here at WVU for at least 15 years. From what Iknow of the collections, I do not believe that this material wascollected straight from habitat even back then. Whether it was bought,traded for or a gift I do not have any records to enlighten me. Thetwo professors who might know are both long retired.
We have been doing an inventory update of the greenhousecollections and working on correcting and updating questionable namesalong the way. I guess for now, this one will stay questionable.
This Dieffenbachia grows very slowly and has a different,deeper green than most. As the picture John attached shows a little,the petioles show stripes and or dots of lighter colors on the deepgreen ground color. Currently the plant is at another greenhouseacross campus, I will try to get a picture of this plant, whatever itis, in the near future and post it. Since we have established that D.hoffmannii is not a valid name does anyone have any suggestions as to acorrect identity?
Thanks to a great group for any help at all.
West Virginia University
PO Box 6057
53 Campus Drive
Morgantown, WV 26506
304-293-5201 ext 31477
>>> "John" <firstname.lastname@example.org>
3/1/2010 2:19 PM>>>
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I cannotgive a source for the name Dieffenbachia hoffmannii but I have in the60s and 70s grown this Dieffenbachia, in fact it was a favourite ofmine. The name is no longer valid, if it ever was, but D.â€˜Exoticaâ€™ or â€˜arvidaâ€™ may be a mutation of it, whatever it is. Both are said by Graf to be from Costa Rica.
Theaccompanying illustration may perhaps answer questions about markingson stem and petiole.