09-01-2026 17:41
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10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
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Danny Newman
Tatraea sp. on indet. hardwood The Swag, Great Sm
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Danny Newman
cf. Neovaginatispora fuckelii on indet. shrub Pre
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Danny Newman
Pezicula sp. on indet. hardwood Appalachian Highl
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Blasco Rafael
Hola, en el mismo habitat que la anteriorRetamaDia
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Blasco Rafael
Hola, He recogido esta muestra de Orbilia sobre Re
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Marc Detollenaere
Dear Forum,On a barkless Populus I found some smal
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Riet van Oosten
Add-on topic http://www.ascofrance.com/forum/7059
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Danny Newman
cf. Chaetospermum on XylariaCosby Campground, Grea
Ascodesmis nigricans?
Chris Yeates,
09-06-2019 16:05

Bonjour tous
Although I have yet to spot the ascomata I have found three groups of eight spores in a mount. The substrate is the small droppings of young sheep in neutral grassland.
The distinctive ornamented ascospores led me to Ascodesmis, and, after consulting Le Gal and Doveri, I think almost certainly Ascodesmis nigricans based on:
Ascospore size - 10.9-12 x 8.9-9.4µm
Broadly elliptical ascospores - Qe = 1.2-1.3
Ascospore ornamentation - not forming a reticulum but formed of irregular warts often capitate/flat topped
As I have not collected an Ascodesmis to date, and as there are few UK records I would welcome any comments.
Amitiés
Chris
Nicolas VAN VOOREN,
09-06-2019 16:16
Re : Ascodesmis nigricans?
Altough the size is in the low range, the shape and ornamentation lead to A. nigricans.
Michel Delpont,
09-06-2019 16:36
Re : Ascodesmis nigricans?
Pas de problème, c'est bien a mon avis A.nigricans ! Jolies photos !
Michel.
Chris Yeates,
09-06-2019 17:19
Re : Ascodesmis nigricans?
Merci Beaucoup Nicolas et Michel
Je viens de localiser la monographie de van Brummelen dans Persoonia 11: https://www.repository.naturalis.nl/document/569775 et ses images sont très utiles. Il est toujours bon de trouver quelque chose pour la première fois - surtout quand on ne s'y attend pas.
Cordialement
Chris


