In-vitro cultivation of Amorph. titanum and Identification

From: Bj?rn Malkmus rareplants at gmx.net> on 2000.12.05 at 16:06:46(5750) Dear all, I have two questions to our experts: 1.) I have in mind that some time ago while having here a heavy discussion on vegetative propagation of Amorph. titanum someone stated that in-vitro corms received from tissue extracted from fresh seeds (or better said seedlings' leaves) may be more viable and show better growth rates than those received from tissue taken from leaves' axils of mature plants ? Does anyone know more on this topic ? Or was that only emerging from my fantasy and wishful thinking ? 2.) From my excursion last October/November I brought some Amorphophallus species back from northern and southern Thailand, of which I do not have any clue so far what species these might be. If anyone is interested, please have a look at some of the fotos I took and some descriptions on plants and their habitats at: http://www.rareplants.de/plants/seeds/araceae.htm New species from Thailand are numbered Spec.002 to Spec.007 For Spec.002 it was suggested that it may be Amorph. muelleri, yet young leaves didn't show any red margins (not even a little bit), stems are mottled kind of different than those of Amorph. muelleri and corms are of light orange-beige color, which I think is different as well. An adult specimen weighed some 20 lbs / 9kg. For Spec.007 it was suggested Amorph. krausei, yet the ones I found didn't make any rhizomatous offsets and (very unsual) the rhizomatous-like corm grows vertically in the ground and is pure white, turning deep violet after a few days when being at plain air. Any help is greatly appreciated. Best wishes and Happy Holidays! Bj?rn Malkmus +More Dipl.rer.oec. http://www.rareplants.de -- Sent through GMX FreeMail - http://www.gmx.net

From: "Wilbert Hetterscheid" hetter at worldonline.nl> on 2000.12.06 at 16:15:25(5759) Dear Bjoern, Question 2: if no expert will show him/herself, I might suggest some names: 002 = muelleri, red margins or not. 003 = excentricus 004 = excentricus 005 = excentricus 007 = elatus The name "albispathus" for your Chinese species should read albus One other thing: your site was extraordinarily slow, both the opening of individual pages as well as the appearing of photos. Cheers, Wilbert +More > 2.) From my excursion last October/November I brought some Amorphophallus > species back from northern and southern Thailand, of which I do not have > any clue so far what species these might be. > > If anyone is interested, please have a look at some of the fotos I took > and some descriptions on plants and their habitats at: > > http://www.rareplants.de/plants/seeds/araceae.htm > > New species from Thailand are numbered Spec.002 to Spec.007 > > For Spec.002 it was suggested that it may be Amorph. muelleri, yet young > leaves didn't show any red margins (not even a little bit), stems are mottled > kind of different than those of Amorph. muelleri and corms are of light > orange-beige color, which I think is different as well. An adult specimen > weighed some 20 lbs / 9kg. > > For Spec.007 it was suggested Amorph. krausei, yet the ones I found didn't > make any rhizomatous offsets and (very unsual) the rhizomatous-like corm > grows vertically in the ground and is pure white, turning deep violet after a > few days when being at plain air. > > Any help is greatly appreciated. > > Best wishes and Happy Holidays! > > Bj?rn Malkmus > Dipl.rer.oec. > http://www.rareplants.de > > -- > Sent through GMX FreeMail - http://www.gmx.net >

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