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03-11-2025 21:34

Edvin Johannesen Edvin Johannesen

These tiny (0.4-0.5 mm diam.), whitish, short-stip

03-11-2025 19:41

David Chapados David Chapados

Hi,Does anyone knows which genus could this be? G

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

03-11-2025 16:30

Hans-Otto Baral Hans-Otto Baral

Hello I want to ask you if you have found this ye

01-11-2025 09:14

Francis Maggi

Bonjour,Trouvé sur Xanthoria parietina à Valdebl

28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

31-10-2025 09:19

Lothar Krieglsteiner Lothar Krieglsteiner

Can somebody provide me with a file of:Rogerson CT

30-10-2025 03:53

Ethan Crenson

Hi all,  I would like an opinion on whether this

09-08-2025 13:13

Maria Plekkenpol Maria Plekkenpol

Hello,Yesterday I found these on burnt soil. Apoth

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

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Small Scutellinia on wood
Malcolm Greaves, 23-07-2013 00:00
Malcolm  GreavesThis group of small Scutellinia (maxium size 2.5mm) with relatively long hairs (5oo x 20) with simple or bifurcate hairs had me convinced I had S setosa.
The spores turned out to be slightly too big at 21-22 x 13 and the ornamentation confirmed it definitely was not S setosa.
With large tubercules could this be S heterosculpturata?

Thanks

Mal
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Beñat Jeannerot, 23-07-2013 06:00
Beñat Jeannerot
Re : Small Scutellinia on wood
Adio Mal,

Surely, you're right, it's not S. setosa. S. setosa is recognized easily at the naked eye by form of apothecia, colour yellow to yellowish, and very black hairs.

Second hypothesis, S. heterosculpturata doesn't correspond. This species is recognized by elongated spores (Q>1.7) and a mix of very little warts and some big in the middle.

Here, without spores, I will say a species of "S. nigrohirtula" complex. In fact, two species are in this complex, probably one on soil and one on wood but I haven't finished the study. Here, hairs are typical.

With spores, it's difficult to confirm this, but I repeat it's necessary to have sporogram with a lot of mature spores, naturally ejected, to be sure that sporal ornementation is homogeneous. Here, we have just one spore and it's difficult to say anything around this.

In this genus, it's very common to have different views of sporal ornementation between mature apothecium, immature, spores in asci or not, in sporogram or alone in the water.
That's why it's very necessary to have sporogram in CB.

Amically,
Beñat
Malcolm Greaves, 24-07-2013 12:29
Malcolm  Greaves
Re : Small Scutellinia on wood
Does this help at all?

Mal
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Beñat Jeannerot, 25-07-2013 07:00
Beñat Jeannerot
Re : Small Scutellinia on wood
Adio Mal,

Interesting. I responded to your mail.

Beñat