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  [Aroid-I) Syngonium macrophyllum - ID
From: Helmut Reisenberger <gartenbaureisenberger at web.de> on 2008.09.16 at 23:26:58(18546)
Dear Tom, Dear All,

May I direct a new question to esp. Tom:
I once got a stem (1 cm diam.) of - obviously - Syngonium macrophyllum from the collection of the Austrian Federal Gardens (formerly the reknown "Impe rial Gardens"). I was told, it was a strange hybrid of indefinite origin, t hat has "happened" around 1900. Meanwhile I have learned, it must be Syngon ium macrophyllum ref. also to images of the juvenile leaves. But the distin ct development of triparte adult leaves - as shown on the pictures - is con fusing me. I have been growing this plant now for a couple of years. It is an extensive grower and easy to be multiplied by cuttings. By the time the juvenile leaves have become bigger and bigger and there never had been any sign of producing "adult" leaves. The juvenile heartshaped leaveblades are now more than 75 cm long and about 45 cm wide.
At any cut of the stem or leaf there is a lot of white sap running out. Is it normal thet the juvenile leaves get that big without turning to the adul t version, or has there really something strange "happened" in the Imperial Gardens at the beginning of the 20th century?


From: "Tom Croat" <Thomas.Croat at mobot.org> on 2008.09.17 at 17:34:15(18547)
Dear Helmut:

There is absolutely no way that the juvenile blades of Syngonium macrophyl lum could have size of 75 cm long. Could you send me images? Are you sure that you are not dealing with two species?


From: RAYMOMATTLA at cs.com on 2008.09.17 at 17:34:34(18548)
Helmut, are you sure it is S. macrophyllum. I believe there are other Syngoniums that resemble S. macrophyllum in its juvenile phase. Im growing S. chiapense which has similar leaves that are very large and thick.




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