Accès membres

Mot de passe perdu? S'inscrire

12-01-2026 05:24

Cyathicula coronata on Urtica dioica - 303628165
Danny Newman Danny Newman

Cyathicula coronata on Urtica dioicaCataloochee Di

11-01-2026 20:35

Pyrenomycete on Conifer Wood
Josep Torres Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

15-12-2025 11:49

cf. Rodwayella on Rhododendron maximum
Danny Newman Danny Newman

ITS sequences from the following two collections B

09-01-2026 17:41

Bryonectria callicarpa Döbbeler; ein Bryoparasit auf Frullania dilatata
Arnold Büschlen

Hallo, F. dilatata wird von vielen Bryoparasiten

10-01-2026 20:00

Lichenicolous fungus on Protoparmeliopsis muralis
Tom Schrier

Hi all,We found picnidia on Protoparmeliopsis mur

07-01-2026 22:22

Tatraea sp. on indet. hardwood - 303452087
Danny Newman Danny Newman

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

10-01-2026 01:18

cf. Neovaginatispora fuckelii on indet. shrub - 305938906
Danny Newman Danny Newman

cf. Neovaginatispora fuckelii on indet. shrub Pre

07-01-2026 10:24

Pezicula sp. on indet. hardwood - 303870019
Danny Newman Danny Newman

Pezicula sp. on indet. hardwood Appalachian Highl

09-01-2026 10:08

Orbilia posible aurantiorubra
Blasco Rafael Blasco Rafael

Hola, en el mismo habitat que la anteriorRetamaDia

08-01-2026 21:22

Orbilia pilifera posible
Blasco Rafael Blasco Rafael

Hola, He recogido esta muestra de Orbilia sobre Re

« < 1 2 3 4 5 > »
Rutstroemia
Joaquin Martin, 30-08-2025 18:29
Hi,


I found this undetermined ascomycete on broadleaf wood in a botanical garden with many exotic trees.
The spores measure 19-22 x 4.7-5.4 µm.
I am thinking of Rutstroemia, but either the habitat or the spores do not match.
Any ideas?
Thank you.
  • message #83391
  • message #83391
  • message #83391
  • message #83391
Hans-Otto Baral, 30-08-2025 20:20
Hans-Otto Baral
Re : Rutstroemia
Why do you think R. firma does not fit? Spore size, shape and content  is o.k. for it. E.g. Huhtinen 1984 measured 19-23 x 4-5 for a sample on Alnus.

There is a R. alnobetulae which could alternatively fit. I remember the contents of the paraphyses stained blue in IKI, and the ectal excipulum is more gelatinous.
Joaquin Martin, 31-08-2025 08:43
Re : Rutstroemia
Hi,

I have never seen it so funnel-shaped and always with minor spores.
Thank you.
Hans-Otto Baral, 31-08-2025 09:40
Hans-Otto Baral
Re : Rutstroemia
R. firma is variable and occurs in a shorter- and straight-spored form. Probably there is a heterogeneity, becasue of a distinct genetical difference among collections which needs more study.

I think the apo shape is not important.
Joaquin Martin, 31-08-2025 13:12
Re : Rutstroemia
Hi,

Thank you for the explanation.
Good day.