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04-11-2025 12:43

Edvin Johannesen Edvin Johannesen

Hi! One more found on old Populus tremula log in O

04-11-2025 09:07

Josep Torres Josep Torres

Hello.A suspected Hymenoscyphus sprouting on a thi

04-11-2025 14:53

Josep Torres Josep Torres

Hello.Very small, globose, mucronate perithecia, b

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

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Crocicreas dolosellum?
Javier Ormad, 01-11-2013 22:38
Javier OrmadHola a todos!
Os presento un especimen en hojas de Fraxinus sp. muy, muy deterioradas, prácticamente sobre los nervios de la hoja. Apotecios disciformes, estipitados, blanquecinos, con flóculos periféricos, de hasta 1 mm de diámetro, distribuidos por el sustrato.
Ascas claviformes, octosporadas, biseriadas, sin uncínulos, IKI+, con canal apical corto, de 60-75 x 7.5-8 micras. Ascosporas elipticas irregulares, lisas, hialinas, con gutulillas en extremos esporales, de 9-10 x 3.5-4 micras. Parafisis filiformes, hialinas, septadas, de hasta 3 micras de grosor. Pelos hialinos, septados, de hasta 145 x 6 micras, surguiendo de un excípulo ectal de estructura angularis. Exípulo medial prismático. Pie con estructura prismática angularis.
¿Que os parece?
Saludos
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René Dougoud, 02-11-2013 07:46
Re : Crocicreas dolosellum?
Cher Collègue,

Il ne s'agit pas d'un Helotiaceae, mais de bien, de par la présence de poils (bien visibles sur vos photos et de par la texture de la chair) d'un Hyaloscyphaceae. La forme des poils ainsi que la présence possible de granullations sont très importants pour la détermination.

Cordialement

René
Hans-Otto Baral, 02-11-2013 08:34
Hans-Otto Baral
Re : Crocicreas dolosellum?
Hi Javier

this is a very interesting collection.  I actually described a new species, which is intended to be published during winter. It reminds me of your, and I saw it only once, on Acer campestre leaves. Drawing attached.

The spores are more fusoid in my specimen, otherwise I see good concordance. Were your paraphyses also a bit tapring above (sublanceolate)? How does the hair apex look`

Zotto

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Javier Ormad, 02-11-2013 12:33
Javier Ormad
Re : Crocicreas dolosellum?
Hola Zotto y René!
Ciertamente, esta especie se aproxima a la que tú presentas, si no es la misma......
Las parafisis no las veo claramente que sean sublanceoladas. Me resulta dificil encontrar croziers, aunque en la última imagen es lo que más se parece.
Envío tambien foto de ápice de pelos. He llegado a medir hasta 200 micras de longitud

Hi Zotto and René!
Certainly, this species is close to what you present, if not the same ......
The paraphyses not be sublanceolates see clearly. I find it difficult to find croziers, although in the last picture is what most resembles.
Shipping apex hairs photo also. I have measured up to 200 microns in length
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Hans-Otto Baral, 02-11-2013 16:37
Hans-Otto Baral
Re : Crocicreas dolosellum?
Hi Javier

it looks like if the asci are simple-septate? And the hairs remind of an Albotricha. I looked for one described by Hosoya (A. fagicola), but that has almost entirely granulated hairs.

Also most of the species are graminicolous or herbicolous.

If you don't mind please send me the specimen, this would be very interesting (best in dry state, the vital characters are seen on your photos).

Zotto 

Hans-Otto Baral
Blaihofstr. 42 
72074 Tübingen 
Germany