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Old 18th April 2018
Harold Gough Harold Gough is offline
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“Egg” Mystery Cracked

In September 2016 I photographed a number of organisms on a rotten log in our garden.

One species reminded me of lacewing eggs. Clearly, these were not of the Green Lacewing, where the stalks are white and the eggs light green becoming black before hatching and only the empty shells being whitish. Anyway, I used “lacewing eggs” as a reference and stored the images with those of slime moulds.

Having recently obtained a comprehensive book on the slime moulds, I recognise a number of species with (often shiny) black stems as being Comatricha or related genera. (I previously encountered such stems first in Stemonitis then in Stemonitopsis and posted images here). I don’t know if any of the following will be identified to species without fresh material but some look rather like C. tenerrima.

The first is the “eggs”. The stereo is crosseye.

The EXIF gives no lens details so it was probably the Kiron 105mm with a supplementary.

EM-1, flash, hand-held.

There are two brown species, or, rather, stages. These are the final stage of development with the mesh “capitillium” extended and exposed to release the spore it bears.

The Reedmace-like one was photographed in the same session as the white one but looks like a different, but closely-related, species.

The third one was photographed on a dead flower stalk of Goldenrod in November last year. The shape is close to that of the “eggs”.

All of these individuals are, at most, 1 mm across.

EM-1, hand-held. I used my reversed Schneider HM40 setup with triple RC TTL flash.

Harold







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Old 18th April 2018
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Bikie John Bikie John is offline
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Re: “Egg” Mystery Cracked

All the technical detail goes way over my head but the gist is very interesting, as are the photos. Thanks Harold.

John
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Old 18th April 2018
Harold Gough Harold Gough is offline
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Re: “Egg” Mystery Cracked

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Originally Posted by Bikie John View Post
All the technical detail goes way over my head but the gist is very interesting, as are the photos. Thanks Harold.

John
Thanks, John.

If you ever learned about Amoeba at school, these are colonial versions, animals, not fungi. However, like fungi, they sometimes form fruiting bodies (this selection all have stalks) which produce and disperse spores. Most of the differences between similar genera or species lies in spore structure of other, internal, details.

Harold
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Re: “Egg” Mystery Cracked

Yeah I thought so..............

Certainly did amoeba...............don't they do it very quickly??
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Old 18th April 2018
Harold Gough Harold Gough is offline
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Re: “Egg” Mystery Cracked

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Yeah I thought so..............

Certainly did amoeba...............don't they do it very quickly??
They say "must split" and they do!

Harold
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Re: “Egg” Mystery Cracked

...............and get fair shares...........
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