Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

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Chris Johnson
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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by Chris Johnson » Thu Aug 24, 2017 6:49 am

A nice find and images, Dave. Not found it here and not sure there are any VC110 records - will check later.

Chris

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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by Waxcap » Sun Aug 27, 2017 12:22 am

Thanks Chris,

I went to look on the FRDBI to see the distribution but it's all changed :o I was told that the old records have not been transferred across to the new site yet but it is in hand.

Regards

Dave

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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by Chris Yeates » Mon Aug 28, 2017 1:57 pm

Hello all
Rosellinia is one of those genera which is often relatively easy to recognise in the field (with a hand-lens), but which always requires microscopical examination to take further. A major problem is that the tough carbonaceous perithecia remain looking pristine long after the spores have been ejected; one has to check for the presence of jelly-like contents to avoid disappointment.

The species here will have hidden within UK records of R. mammiformis until it was recognised that that name contained more than one distinct species. Accordingly R. britannica was erected to cover finds with longer spores than typical R. mammiformis and with longer "ascal plugs" - in common with most of the Xylariaceae the latter stain beautifully in Lugol's iodine.

More recent work has shown that the name R. marrucciana predates R. britannica and therefore takes precedence. This thread http://www.ascofrance.com/search_forum/50116 gives more details and includes a link to a paper covering the R. mammiformis complex, and contains a useful key to these and similar Rosellinia spp.
cheers
Chris
Rosellinia marrucciana 0b.jpg
Last edited by Chris Yeates on Wed Aug 30, 2017 12:18 am, edited 1 time in total.
"You must know it's right, the spore is on the wind tonight"
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alindsay
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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by alindsay » Fri Sep 08, 2017 7:24 pm

Hericium coralloides found last week in Buckinghamshire. Nice!!!
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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by Flaxton » Sat Sep 09, 2017 6:14 am

Beautiful.
Mal

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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by adampembs » Thu Sep 14, 2017 5:52 pm

Tricholoma sciodes - Beech Knight
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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by Chris Yeates » Sun Sep 24, 2017 5:14 pm

Nothing uncommon, but I often like to take a closer look at fungi we treat as well known or easily recognised. Here is a shot of a portion of the cap of a Lepiota cristata basidiome. It shows nicely how the expanding cap has left islands of the original all-tawny pileipellis. You can see the stretching white hyphae of the layer beneath; and, in the upper middle portion, you can make out how the brown patches originally fitted together, plate tectonic-like . . .
Chris
Lepiota cristata 04.jpg
Lepiota cristata - cap
Edit Here you can see the spurred / bullet-shaped spores (with a laterally positioned apiculus) and the spores in Melzer's Iodine showing a typical dextrinoid reaction:
Lepiota cristata 08.jpg
Lepiota cristata 09.jpg
"You must know it's right, the spore is on the wind tonight"
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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by roy betts » Tue Sep 26, 2017 7:11 pm

For once, had my camera out with me! Growing in mown grass in 'parkland' - Psathyrella multipedata.
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Psathyrella multipedata

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Re: Fungus Of The Day (One identified fungus only please, with species name in attachment comment and in post)

Post by Waxcap » Wed Sep 27, 2017 1:45 pm

Here's a little Scleroderma areolatum - Lepoard Earthball growing on some very rotten wood. It was about 1.5cm across.
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Scleroderma_areolatum.jpg
Scleroderma areolatum
Scleroderma_areolatum-2.jpg
Scleroderma areolatum

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