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01-06-2025 09:37

Octospora
Charles Aron Charles Aron

Hi All, I found this Octospora growing with liver

05-07-2025 12:38

Pyrenomycetous fungi on dead Juniperus twig
Åge Oterhals

I found this pyrenomycetous fungi in pine forest o

04-07-2025 20:12

Black thready anamorph
Josep Torres Josep Torres

Hello.A fungus growing on the surface of a trunk o

20-06-2025 08:33

Ascomycete on a herbaceous stem.
Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

28-06-2025 16:00

Salvia leaf parasite
Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

04-07-2025 12:43

En tallo de herbaceas 1102
Castillo Joseba Castillo Joseba

me mandan el material seco de Galicia (España) 

03-07-2025 18:40

Melampsora ??? en Salix
Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Yellowish asco on submerged Larix needles
Francois Guay Francois Guay

I found this interesting yellowish asco growing on

01-07-2025 23:37

Help with a Pleosporal.
Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

hymenoscyphus albidus
Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

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Helotiales gen. sp. from Oxycoccus leaves
Nina Filippova, 08-06-2014 13:18
I have shown once this species before from a single sighting on dead leaf of Oxycoccus palustris. Now it was encountered regularly on the same substrate, but I still not sure about its position. Date of collection: 05.06.2014. Coordinates: N60,893452° E68,672102°

Apothecia sessile, scattered, greenish, translucent, up to 120 mk across, not high, scattered on lower and upper leaf surface.

Excipulum from textura prismatica, cells thick-walled, edge row from clavate cells, all cells in upper part of receptacle with green vacuoles; asci clavate, with obtuse-conical tip, without crozier, with euamyloid ring, 52-60 x 11-14 mk; paraphyses scarcely branched, cylindrical at base, enlarged in upper part (3.3-4.6 mk), with green vacuoles in upper part; spores fusoid, slightly curved, with medium and small green guttules, 17.4 (14.3-19.3) x 3.9 (3.4-4.2) (n=13).

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Nicolas VAN VOOREN, 09-06-2014 08:46
Nicolas VAN VOOREN
Re : Helotiales gen. sp. from Oxycoccus leaves
I suggest a Calycellina species.
Nina Filippova, 09-06-2014 11:41
Re : Helotiales gen. sp. from Oxycoccus leaves
Hello Nicolas.
Yes, some characteristics are close to description of Calycellina in Raitviir (2004):

i have not mentioned before important characters: 1) brown basal ring, 2) bright yellowish pigment in hairs and paraphyses turning reddish-brown in YKY

Following this publication, there is only one species with close spore shape and size, it is Calicellina punctata. But spores in this species are narrower than mine and the substrate differs, e.g. need to be studied further i think.
Hans-Otto Baral, 09-06-2014 23:00
Hans-Otto Baral
Re : Helotiales gen. sp. from Oxycoccus leaves
Hi Nina

C. punctata has spores with a very low oil content, unlike yours. 

The spores strongly remind me of Allophylaria byssacea which is on grasses though although on dicot stems. but the apicla ring is red (type rb). Here an example.
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Nina Filippova, 10-06-2014 18:38
Re : Helotiales gen. sp. from Oxycoccus leaves
Thanks, Zotto.

I will check hemiamyloidity again, i guess my solution has faded and i have missed this reaction probably.