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  Pollenation of D. gigas.
From: "Julius Boos" <ju-bo at msn.com> on 1997.04.04 at 14:13:17(575)
Dear Hans, I believe that you would have to place pollen from the ELDER of
the two infloresences onto the spadix of the YOUNGER as SOON as it opens, as
only at this stage is the second [and younger] infloresence at female
anthesis. This was my experience with D. asperum, which I sucessfully
pollenated and which I produced seed for me some years ago. Development to
maturity took aprox. ten months!
I wish you luck if you manage to produce seed in germinating them, as none
of my seed germinated! The only person that I know of that has germinated
Dracontium seed sucessfully is Joep Moonen in Fr. Guiana, so this hints at a
need for keeping them quite warm. Good luck!

From: Eduardo Gomes Goncalves <eggon at guarany.cpd.unb.br> on 1997.04.08 at 01:51:46(585)
Dear Julius and Hans,

I'm trying to germinate seeds from both Dracontium margaretae and D.
bogneri. I sowed them 4 weeks ago and nothing happened yet. I think they
will only germinate in the next growing season (early October), with
the first rains of our southern spring. It's a very predictable pattern
here in the Central areas of South America, where the winter is somewhat
dry and it is not suitable for the growth of seedlings. Maybe time is
the key factor. I really don't know if such pattern works for species
from Central America (as D. gigas), but it can be a clue. Probably
Guanghua can help us...
Whatever, I'll notice you when mine sprout.

Best wishes,


From: "Dr. Guanghua Zhu" <gzhu at lehmann.mobot.org> on 1997.04.09 at 03:48:32(591)
Dear Eduardo,

Tom Croat brough back some Dracontium polyphyllum seeds from Franch
Guiana a couple of years ago for my study. If took a long time, more
than eight weeks, for me to get a few seedlings. You may have to
wait some time longer for Dracontium margaretae. Please keep us
posted on what you will find out.


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