IAS Aroid Quasi Forum

About Aroid-L
 This is a continuously updated archive of the Aroid-L mailing list in a forum format - not an actual Forum. If you want to post, you will still need to register for the Aroid-L mailing list and send your postings by e-mail for moderation in the normal way.

  Identify this Amorph
From: "Adao Pereira" miguelporto at mail.telepac.pt> on 2000.09.06 at 02:06:17(5345)
Hello to all!

A while ago I received a big tuber (20 cm across) of an Amorphophallus which
was supposed to be one A. paeoniifolius. But finally the leaf came up and
the petiole is totally smooth! Now, I don't know what species could it be. I
was told that perhaps A. konjac, but in all the pictures I've seen of A.
konjac, the petiole is very different... it's never green.
You can see the photos of the plant at

another big difference between this plant and the true Amorph. paeoniifolius
(I have this one, too so I can compare easly) is the size of the leaflets:
while those of paeoniifolius don't reach 10 cm in length, those of the
unidentified Amorph are about 20 cm long!! Much bigger!! And the two plants
are about the same size, so this difference must be in the species.

Well... anyway, I would appreciate very much any help!

BTW, thanks for the tips about how to germinate Anthuriums!

From: "Wilbert Hetterscheid" hetter at worldonline.nl> on 2000.09.07 at 14:26:58(5352)

The size of the leaflets of yuor plant is not a relevant distinction in
paeoniifolius, of which this size varies considerably. I think your plant IS
paeoniifolius after all. You ran into one of the few clones/cultivars that
through the long ages of domestication of this species, has developed smooth
petioles. In olden days, such forms were identified as "var. hortensis" and
should represent clones with a lower amount of irritating oxalates in the
tuber, making it more easy to refine for food production.

The colour of the petiole is also not a relevant character, although, also
in the past, the green colour was part of the identifiers of "var.
hortensis'. However, there are numerous examples of green petioles with a
very rough surface.


From: GeoffAroid at aol.com on 2000.09.07 at 14:27:27(5354)
Further to Miguel's query about the Amorph tuber I should add that these
tubers (I sent it to Miguel) are found in London, only in Sri Lankan (=
Ceylon) grocers, where they are sold for food. I had assumed they were A.
paeoniifolius but the petioles are smooth. The tubers do not look like any
tuber of A. konjac that I have grown being much rougher on the upper surface.
They can reach huge size, I have seen some for sale about 12-14ins across. I
guess this one is over to Wilbert for his views.

Regards to all,
Geoffrey Kibby

From: "Adao Pereira" miguelporto at mail.telepac.pt> on 2000.09.08 at 03:15:11(5375)

Ok, everything that was said here makes sense, the tuber was bought by
Geoffrey in a food store (thanks very much, Geoffrey!), so, it should be a
variety used for food, as Wilbert says!
Thanks, the mistery is gone!
Good growing!

Note: this is a very old post, so no reply function is available.