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Re: Dieffenbachia hoffmannii photo?

  • Subject: Re: Dieffenbachia hoffmannii photo?
  • From: "Tom Croat" <Thomas.Croat@mobot.org>
  • Date: Mon, 15 Mar 2010 11:37:48 -0500

Dear Steve:


            I know nothing about the origin of that image but I might not even be D. seguine.  That species has at least 3 distinct features, a sharply sulcate petiole, a protrudent spadix which is somewhat clavate spadix and a bilocular ovary.  Other than that it is highly variable. 




From: aroid-l-bounces@gizmoworks.com [mailto:aroid-l-bounces@gizmoworks.com] On Behalf Of ExoticRainforest
Sent: Friday, March 12, 2010 2:39 PM
To: Discussion of aroids
Subject: Re: [Aroid-l] Dieffenbachia hoffmannii photo?


Due to confusion over the link I gave for a photo of Dieffenbachia seguine I located another from the Missouri Botanical Garden.  At least to me, this photo resembles the photo posted of "Dieffenbachia hoffmanii" from Graf's work. 



On 3/1/2010 01:19, John wrote:

I cannot give a source for the name Dieffenbachia hoffmannii but I have in the 60s and 70s grown this Dieffenbachia, in fact it was a favourite of mine.  The name is no longer valid, if it ever was, but D. ‘Exotica’ or ‘arvida’ may be a mutation of it, whatever it is.  Both are said by Graf to be from Costa Rica.


The accompanying illustration may perhaps answer questions about markings on stem and petiole.




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