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Pollia condensata, "shiniest living thing in the world&

 
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ChrisR
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Joined: 14 Mar 2009
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PostPosted: Mon Feb 06, 2017 3:53 pm    Post subject: Pollia condensata, "shiniest living thing in the world& Reply with quote

AKA Marble berries, which grow in central west Africa.

Has anyone ever seen them or photographed them?
Right up Mr Krebs' street, I think. Wink

A plant sold in 2015 on Italian ebay for $35 - may not have been in fruit though!

It would make a change from butterflies and beetles.
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Last edited by ChrisR on Fri Feb 10, 2017 2:33 am; edited 1 time in total
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MarkSturtevant



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PostPosted: Thu Feb 09, 2017 10:06 pm    Post subject: Reply with quote

I had heard of them, and pictures are available online:
https://en.wikipedia.org/wiki/Pollia_condensata#/media/File:Pollia.jpg

I remember learning that they are an example of a structural color, which are the metallic colors more often seen in animals (think blue morpho butterflies, or metallic green beetles). The effect is caused by differential interference of light.
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ChrisR
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PostPosted: Fri Feb 10, 2017 2:43 am    Post subject: Reply with quote

That's right Mark. I found them while searching for things about organic structural colours. Most are animals.
The pointilist nature of the structure is interesting.
I'm not far from Kew Gardens, "largest and most diverse botanical and mycological collections in the world" so I'll ask if they can show me any.
Perhaps I can scrounge a berry.
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Beatsy



Joined: 05 Jul 2013
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PostPosted: Fri Feb 10, 2017 8:25 am    Post subject: Reply with quote

Very interesting - thanks for posting Chris. There's a bit more info in this article. http://earthsky.org/earth/brightest-biological-substance-reveals-its-secret
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Pau
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PostPosted: Fri Feb 10, 2017 11:27 am    Post subject: Reply with quote

...and the original paper can be read (free) following the link at the end of the article liked by Beatsy, just click on "full text" Very Happy
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ChrisR
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PostPosted: Fri Feb 10, 2017 12:37 pm    Post subject: Reply with quote

I don't see a "full tect" link, only the abstract.

Read the "Reply" though.


THis is fun too: The vanishing Sea sapphire
https://youtu.be/26kus22RaTo
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Pau
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PostPosted: Fri Feb 10, 2017 1:06 pm    Post subject: Reply with quote

At http://www.pnas.org/content/109/39/15712.abstract



You can also access to the images at full resolution, but could be because I'm a registered PNAS suscriber
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Beatsy



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PostPosted: Fri Feb 10, 2017 1:19 pm    Post subject: Reply with quote

Pau wrote:
...but could be because I'm a registered PNAS suscriber


I think that's it because I don't see that tab bar. Only the abstract is available.
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ChrisR
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PostPosted: Sun Feb 26, 2017 3:45 am    Post subject: Reply with quote

Quote:
I don't see that tab bar.
Nor I.
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