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  Amorphophallus query
From: Paul Tyerman tyerman at dynamite.com.au> on 2000.12.16 at 15:39:50(5781)
Howdy All,

A quick query for those knowledgeable types out there......

I purchased a few different Amorphophallus last year. Two of these were A.
abyssinicus (as far as we know) and had an interesting three-part leaf,
which as far as I know is standard for Amorphs.

I also puchased a couple of other Amorphs.... one A. konjac and another
unknown species (not yet ID'd). Both of the latter do not have the same
three part leaves, but bear an uncanny resemblance to plants that I have
got from a couple of different sources as Sauromatum guttatum/venosum. Do
Amorphophallus konjac and Sauromatum guttatum/venosum bear any resemblance?
The leaves are more like the shape of Arisaema leaves, with lobes
radiating out from a central lobe (sort of mirrored on either side), rather
than the triple branched leaf of the Amorph abyssinicus.

I can take pics of these plants and email them to people if any are
interested. I think there's been a mistake and I have somehow got more
Sauromatum, but I am not knowledgeable enough to be certain.

Can anyone help? I realise my descriptions are not the best above, but I
hope they are clear enough to put across the point I am trying to make.

Thanks in anticipation....


Paul Tyerman

From: "Wilbert Hetterscheid" hetter at worldonline.nl> on 2000.12.16 at 23:20:02(5782)

If the Sauromatoid "amorphs" indeed have a leaf as you describe, they cannot
be amorphs. As a general rule, each branch of an amorph-leaf carries 2 or
more individual leaflets, and they are found to be attached at both lateral
sides of each branch. In Sauromatum (does that genus still exist???) and
Arisaema you'll find that all leaflets point to one side and are attached to
one side. This is more difficult to see on a more radiate (wheel-like) leaf,
but again, you'll not find any subdivisions of the leaf-branches (if you can
detect them...) there either, as you will in most amorphs.

Better thgan try to unravel all that mumbo-jumbo I just wrote is to send me
an email with a few scans to: hetter@worldonline.nl).


From: Victor Soukup soukupvg at email.uc.edu> on 2000.12.16 at 23:21:32(5783)
It seems that you do indeed have more Sauromatum venosum. In my less than
encyclopaedic knowledge of Amorphophallus almost all species have the large
umbrella shaped, tripartite leaf with many small leaflets. A. konjac
certainly has that kind of leaf.

From: "newton" newton at coiinc.com> on 2000.12.16 at 23:21:45(5784)

The two plants are as different as night an day. Venosum leaf forms a
horseshoe-like shape, symmetrical of the petiole while the konjac has the
three pats radiating from the central petiole.

The konjac leaf might be a darker green than is typically seen with venosum,
with the leaf petiole being cream to pink with dark spots vs. light green
with darker green spots on venosum.

There are good pictures available on the Aroid site is you look around at
the member's photo sites.


From: Paul Tyerman tyerman at dynamite.com.au> on 2000.12.16 at 23:28:09(5785)
Howdy Again All,

I am now almost certain that they aren't Amorphophallus. I went back
through emails and found Marc Baracks Amorphophallus site and every Amorph
seems to have that 3 part leaf structure.

So my query is now whether that three part structure is in smaller immature
plants or not? The A. konjac bulb was only around an inch or so wide, so
it is only small from what I've heard about them....... would it already
have the three part structure?

Thanks for any information.


Paul Tyerman

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