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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

07-01-2026 17:29

Marc Detollenaere Marc Detollenaere

Dear Forum,On a barkless Populus I found some smal

10-11-2021 17:33

Riet van Oosten Riet van Oosten

Add-on topic http://www.ascofrance.com/forum/7059

07-01-2026 10:05

Danny Newman Danny Newman

cf. Chaetospermum on XylariaCosby Campground, Grea

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Ascodesmis nigricans?
Chris Yeates, 09-06-2019 16:05
Chris Yeates
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
  • message #58086
  • message #58086
  • message #58086
Nicolas VAN VOOREN, 09-06-2019 16:16
Nicolas VAN VOOREN
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
Michel Delpont
Re : Ascodesmis nigricans?
Pas de problème, c'est bien a mon avis A.nigricans ! Jolies photos !

Michel.
Chris Yeates, 09-06-2019 17:19
Chris Yeates
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