Wednesday, 28 October 2015

Sistotrema season

Suddenly every day I'm getting another Sistotrema lesson. This beautiful white athelioid specimen was found on a dead heather stem (I presumed Calluna vulgaris but I have to check- see later). In the field it has an open structure with a more opaque snowy feel where the hyphae have mounted up centrally. By the time it got home the open spaces had closed up and it had become more matted.

The typical skinny Sistotrema sterigmata were the first flag to be waved under the microscope. There being 6 of them certainly helps ease the keying.

Since I ran it under the lens without spore printing I had to seek out some spores to see if I could do without spore printing and fortunately was able to find a few here and there. No cystidia rules out a large number of species anyway.

It was comforting to find in Bernicchia that the species had been noted on an Erica sp. (hence Calluna note!). This isn't unique in the Sistotrema listed in that book, but it is reassuring nonetheless.

The species has scattered records and a good few in Scotland, though I can't remember seeing any listed as being from heather

Dead heather stem

Pretty athelioid structure

More matted back at home

Typical Sistotrema basidium
Some spores in the mix

Another basidium

Clamped bases

Tuesday, 27 October 2015

Goblin's Beard

Caused by Exidipsis effusa apparently!

Sistotrema diademiferum, Cullaloe 24/10/2015

A nice corticioid on a small twig in the mixed woodland, maybe Birch or Fagus. Possibly even Pinus. This species seems to be happy on various substrates. The Sistotrema's 6 sterigmata were quite clear from the off, mercfully and it keyed out nicely in Ellisx2, Bernicchia and even CNE.

It's curious to see such skinny sterigmata topped with sub-globose spores. This arrangement- the circle of spores - presumably gives it its epiphet diademiferum, with a diadem being a royal crown, though you would imagine that could apply to any Sistotrema or Botryobasidium. Sistotrema "bunch of grapes" isn't so catchy.

(It has just now been pointed out to me that botryo refers to a bunch of grapes though in reference to the bunched basidia - thanks SB)

Thin fb on a twig

basidial clamp

6 sterigmata

sub-globose spores c.4x3.5

Bunch of grapes, or "diadem"

Scattered hymenial elements

Dug up from last week's pics - the original looking pretty much like Beech (Fagus)

Monday, 26 October 2015

Leptosporomyces galzinii at Cullaloe, 20/10/2015

On a log of very old and rotten Scots Pine.

The first clue is its athelioid nature, an indeed it was considered an Athelia before. You can see the soft webbiness of the fruit "body" in the first pic and the fact that it has slight holes through it. Another thing this has revealed is what Ellis and Ellis mean in their key by "not firmly attached to substrate". This is the first species I have keyed out there which follows this route. It's the only species in Ellis&Ellis of this genus, though there are others listed in Bernichhia.

Everything about this fungus is tiny, so that even at x1000 with oil you are peering hard. The hyphae are barely 2u wide, the spores not much more than 2u long

Thursday, 22 October 2015

Botryobasidium pair

subcoronatum and conspersum from Cullaloe woodland

First up subcoronatum, very common and probably featured several times on here.

Then the lovely conidial conspersum, first for Cullaloe

Monday, 19 October 2015

Hyphodontia alutaria, Cullaloe LNR, 17/10/2015

A thin smear on some rotten wood, this turned out to be very nice under the lens

The most obvious thing of note was the long capitate septo-cystidia with occasional clamps. They stuck out like a sore thumb (literally?)

Here's one of the clamp on the cystidial septa, with a bonus basidium appearing above it:

And here is the second cystida type - a lagenocystidium - to the left of the measure:

Spores were thin-walled, hyaline, j- and 5-6u long, c.3-3.5u wide

It has been called Peniophora and Grandinia in the past. And Odontia. And Kneiffiella ...

I did kind of expect it to be a Peniophora though

Wednesday, 14 October 2015

Downtown Peziza

I don't really have a good way of dealing with ascomycetes, but this fantastic cup on the Bank of Scotland building in Dunfermline deserves a spot. I am mre or less assuming it is Peziza cerea, or Cellar Cup, despite making no micro investigations whatsoever.