Accès membres

Mot de passe perdu? S'inscrire

07-01-2026 10:24

Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

07-01-2026 22:22

Danny Newman Danny Newman

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

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

06-01-2026 20:54

Thierry Blondelle Thierry Blondelle

Bonjour à tous et meilleurs voeux pour cette nouv

02-01-2026 17:43

MARICEL PATINO

Hi there, although I couldn't see the fruitbody, I

04-01-2026 17:45

Stephen Martin Mifsud Stephen Martin Mifsud

I was happy to find these orange asmocyetes which

02-01-2026 22:48

éric ROMERO éric ROMERO

Bonjour tous, Je profite de cette nouvelle demand

02-01-2026 19:35

William Slosse William Slosse

Good evening everyone,First of all, my best wishes

« < 1 2 3 4 5 > »
Pezicula sp. on indet. hardwood - 303870019
Danny Newman, 07-01-2026 10:24
Danny Newman
Pezicula sp. on indet. hardwood

Appalachian Highlands Science Learning Center, Great Smoky Mountains National Park, Haywood County, North Carolina, USA


Collected during the 2025 Richard P. Korf Memorial North American Ascomycete Foray (aka "The Korf Foray), held at the Appalachian Highlands Science Learning Center in Purchase Knob, North Carolina.

photo credits: Rees Cronce
micrographs: Patrick Verdier

sequence available on iNaturalist.

no spores observed outside of asci.
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
  • message #84273
Hans-Otto Baral, 07-01-2026 10:48
Hans-Otto Baral
Re : Pezicula sp. on indet. hardwood - 303870019
The blue iodine reaction must be after KOH. ITS-Blast gives 98.5% P. pruinosa & P. ericae, so the species remains unclear and might be unsequenced so far.

If you could specify the host this might help. 

The dark pycnidial anamorph looks very unusual in Pezicula spp. known to me. Could it be that the black anamorph is the host? Where did you pick up the conidia which are a typical Pezicula anamorph? Inside the black pycnidia?
Danny Newman, 08-01-2026 03:21
Danny Newman
from Patrick
Zotto and Dany,

In reference to the Pezicula specimen, there is clearly a mixture of Anamorph and Teleomorph in the specimen. Either they are the same thing, or one is parazitizing the other.


When in isolation, the anamorph appear as individual, regularly shaped beaked pycnidia with long necks. When associated with the teleomorph, they are often branched, distorted and sometimes even appear to "poke through" the apothecia. The apothecia come in either cespitose clusters, or singly in which case they tend to be larger. In certain cases, they appear to grow directly out of the pycnidial "tubes" with a dark melanistic collar at their base. Unfortunately I lack the resources to do good frozen sections to demonstrate this relationship.


Yes, the blue ascal plug is post KOH. I plan to do a series showing the hemiamyloid reaction before and after KOH in the same ascus, also with Melzer's.
I will predict 2 things before doing this:
-The inhibition of the dextrinoid reaction by chloral hydrate can be partially overcome by increasing the iodine concentration well above standard formulas.
-the apical dome will swell causing an apparent elogation of the apical plug


I'm ready to eat crow if I can't demonstrate either of these phenomena.


I will do some additional microscopy of the anamorphs to further characterize the conidia.


-Patrick