Ipomoea forum: Biggest Ipomoea seed?

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Name: Carsten
Denmark (Zone 8b)
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Carsten_DK
Oct 28, 2016 2:34 AM CST
I have always been fascinated by the abundant expectations that seeds can provide....so the bigger the seeds - the bigger the expectations... Smiling

So far, I. tuberosa is the biggest Ipomoea seed I have come across. It's seen below dry and growing - and with I. alba to the far left for comparison.

Can anybody help to answer - which Ipomoea species have the biggest seeds?

And are there any non-Ipomoea species that provide comparably big seeds in the Convolvulaceae family?

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[Last edited by Carsten_DK - Oct 28, 2016 5:27 AM (+)]
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Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
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Gerris2
Oct 31, 2016 6:48 PM CST
I don't really know.

I think Ipomoea tuberosa is a synonym of Merremia tuberosa, but will have to heck a couple more sources.
Name: Ronnie (Veronica)
Southeastern PA (Zone 6b)
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luvsgrtdanes
Nov 1, 2016 4:23 PM CST
Biggest one I've ever seen is Ipomoea sepacuitensis.
It happens in a flash, but the memory of it last forever. It can not be borrowed or stolen, and it is of no earthly good until it is given away. So if in your hurry you meet someone who is too weary to smile, leave him one of yours, for no one needs a smile quite as much as he who has none to give...

Name: Carsten
Denmark (Zone 8b)
Image
Carsten_DK
Nov 5, 2016 7:27 AM CST
Gerris2 said:I don't really know.

I think Ipomoea tuberosa is a synonym of Merremia tuberosa, but will have to heck a couple more sources.


Joseph,

I think you are right. I find a number of resources calling them both names.

I am not an expert on Convolvulaceae - but this plant, unlike the Ipomoea's I have seen so far, keeps its cotyledons in the seeds shell - see picture below. At least my 2 examples do so far. Does this "disqualify" it as an Ipomoea?

As expected from a plant born with such a large lunchbox - it's really taking off despite the lack of light here. Since the picture 2 days ago it's grown another 10 cm up a stick.

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Name: Carsten
Denmark (Zone 8b)
Image
Carsten_DK
Nov 5, 2016 7:30 AM CST
luvsgrtdanes said:Biggest one I've ever seen is Ipomoea sepacuitensis.


Okay - thanks for the info I tip my hat to you. .Its hereby on my wish-list Smiling
Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
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Gerris2
Nov 8, 2016 3:13 PM CST
Ipomoea sepacuitensis (top row) compared to Ipomoea nil.


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Name: Carsten
Denmark (Zone 8b)
Image
Carsten_DK
Nov 19, 2016 9:58 AM CST
Thanks Joseph for the picture of Ipomoea sepacuitensis I tip my hat to you.
Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Nov 21, 2016 12:49 PM CST
I recently received a single seed of Merremia tuberosa in a seed trade. You're right, Carsten, it is a giant seed. The 3 seeds in lower part of the photo are of Ipomoea sepacuitensis.

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Name: Carsten
Denmark (Zone 8b)
Image
Carsten_DK
Nov 21, 2016 2:24 PM CST
Thank for the photo-comparison Joseph Smiling I learn something everyday I tip my hat to you. .

Ron Kushner commented on the post yesterday and said that Merremia discoidesperma held the record.... Judging by the picture below and info provided on the www - it does seem to come out as the largest I have seen/read about so far....... :-)
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Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Nov 21, 2016 2:59 PM CST
Yes, those are keeper size seeds.
Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Nov 30, 2016 9:57 AM CST
How is your Merremia tuberosa growing?

Do you have any references that documents this species as a caudiciform?
Name: Carsten
Denmark (Zone 8b)
Image
Carsten_DK
Dec 3, 2016 12:55 PM CST
Its getting bigger.... However, the aphids have for some reason taken a specific liken to it...so it's been set back a bit.

I do like its nice dark-green foliage. And it would probably look better on some kind of coil - instead of on a small stick ....as it runs out of stick really quick.... Smiling (I had to bring the top back down)

No - I have not gotten around to reading much about it.... I am first of all hoping to see a flower on it at some stage....and trying to figure out how to get there.

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Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Dec 3, 2016 6:29 PM CST
Ron gave me not so encouraging information that it was only successful in warm regions, like southern California, South Texas or very south Florida. It will still be fun growing it. Who knows, maybe we will score with flowers some day.
Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Dec 5, 2016 12:44 PM CST
Your plant is looking great, Carsten! Mine is just now emerging!!


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Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Dec 6, 2016 8:21 PM CST
It is emerged now!

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Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Dec 16, 2016 8:23 PM CST
I repotted the seedling into about a gallon size pot, deep vs. wide. I also gave it a more substantial trellis. I learned it could make a vine 90 feet long (27 meters). Yikes!
Name: Joseph
Delaware USA (Zone 7a)
Morning Glories Adeniums Region: Delaware Salvias Composter Container Gardener
Garden Photography Plant and/or Seed Trader Region: United States of America
Image
Gerris2
Dec 19, 2016 3:15 PM CST
Here are views of Merremia tuberosa leaves from the very first to more recent.


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