Accès membres

Mot de passe perdu? S'inscrire

16-06-2019 19:17

Nicolas VAN VOOREN Nicolas VAN VOOREN

On dead stem of Veratrum, numerous dot-like specim

16-06-2019 11:54

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello.Here is a Hymenoscyphus species growing on b

16-06-2019 12:07

Riet van Oosten Riet van Oosten

Hello, Found by Theo Westra, 13-06-2019 (The Neth

14-06-2019 15:32

Malcolm  Greaves Malcolm Greaves

A small group of Perithecia on rotten (salix?) woo

14-06-2019 09:40

Per Marstad Per Marstad

I have found this in Norway, on hardwood, laying o

14-06-2019 06:40

Django Grootmyers

What is this parasite of Cantharellus minor? Found

11-06-2019 01:49

Valencia Lopez Francisco Javier

Hola amigos...Adjunto fotos de unas supuestas Para

11-06-2019 00:32

Elisabeth Stöckli

Bonsoir, Sur feuilles de ronce (Rubus/roncier à

11-06-2019 16:20

Garcia Susana

Hola, He recolectado este asco sobre estiercol, c

12-06-2019 22:42

Ethan Crenson

Hello all, A friend noticed these tiny fruiting b

« < 1 2 3 4 5 > »
Ascobolus on raccoon droppings
Ethan Crenson, 20-05-2019 22:07
In New York City on what I believe are raccoon droppings.  This appears to be Ascobolus sp.  The small orange cups are fringed at the margin and appear to be sessile.  Asci 137-187 x 13.8-17.5µm. IKI-  Spores, when mature, purple brown with longitudinal anastomosing striations 16-17.5 x 8.5-9µm.  Paraphyses occasionally branched, septate.  Excipulum textura globulosa/angularis.  Perhaps the apothecia were not sufficiently ripe, but is it possible to know what this is?  Thank you in advance.
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
  • message #57841
Jacky Launoy, 21-05-2019 09:35
Re : Ascobolus on raccoon droppings
It looks like Ascobolus michaudii
Ethan Crenson, 22-05-2019 21:32
Re : Ascobolus on raccoon droppings
Thank you, Jacky.  I am having some difficulty understanding the finer points differentiating A. lignatilis, foliicola, furfuraceus, michaudii.  In another post on the topic on this forum François Valade comments that the brown walled excipulum cells (in michaudii & lignatilis) vs. hyaline or yellow cells (in foliicola)--but I'm not sure I'm translating these concepts properly. At any rate I have made more images, including more mature apothecia, mature spores and excipulum.  Spores at maturity seem to be quite reliably 16-18 x 9µm, brown, with some branching grooves--even some that connect laterally. Q=1.93  The apothecia only reach 3-4 mm in diameter.  Perhaps there is more detail here that could confirm A. michaud?
  • message #57875
  • message #57875
  • message #57875