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11-01-2026 20:35

Josep Torres Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

12-01-2026 05:24

Danny Newman Danny Newman

Cyathicula coronata on Urtica dioicaCataloochee Di

15-12-2025 11:49

Danny Newman Danny Newman

ITS sequences from the following two collections B

09-01-2026 17:41

Arnold Büschlen

Hallo, F. dilatata wird von vielen Bryoparasiten

10-01-2026 20:00

Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

07-01-2026 22:22

Danny Newman Danny Newman

Tatraea sp. on indet. hardwood The Swag, Great Sm

10-01-2026 01:18

Danny Newman Danny Newman

cf. Neovaginatispora fuckelii on indet. shrub Pre

07-01-2026 10:24

Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

09-01-2026 10:08

Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

08-01-2026 21:22

Blasco Rafael Blasco Rafael

Hola, He recogido esta muestra de Orbilia sobre Re

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Boliniaceae (?) on twig of decideous tree/bush
Lothar Krieglsteiner, 11-06-2020 12:30
Lothar Krieglsteiner... maybe Crataegus, but I am not sure (different hosts in the vicinity).
As I collected, I thought of a Hypoxylon or similar, but the spores are quite small (about 7,5-9(9,5)/3,5-4,5) µm, and the ascus porus does not react in IKI. Maybe Camarops petersii could be an option?
First, I only discovered the old specimens (foto in the field) that did not any more contain a lot. But at home, I saw there was a good stroma also (studio foto) with many unripe, but also some ripe asci with spores.
With KOH, an olive-brown pigment is extruding, but in the slide (with water first) I saw a violet pigment in the sterile tissue - not as strong as the picture is indicating, but nevertheless present.
Best, Lothar
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Thomas Læssøe, 11-06-2020 13:21
Re : Boliniaceae (?) on twig of decideous tree/bush
I believe that I see a germ slit and an amyloid apical apparatus which also tallies with the macroscopical appearance and the pigments : a Hypoxylon (spores not particurly small for this genus) 
cheers
Thomas
Lothar Krieglsteiner, 11-06-2020 13:28
Lothar Krieglsteiner
Re : Boliniaceae (?) on twig of decideous tree/bush
Hello Thomas,
thanks for your opinion. I did not see a germ slit, but I will re-examine the specimen. And I did not notice a blue or red discolouring of the stongly visible apical apparatus. But as you suggest, I will re-examine. There is always few time after an excursion for each sample (and there are always dozens of spedimens).
Later then more,
best regards,
Lothar