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26-02-2026 22:06

Malcolm  Greaves Malcolm Greaves

Can someone explain the features that split Geoscy

26-02-2026 15:00

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, recolectada

24-02-2026 00:21

Benoît Segerer

Hello,I'm new to this forum, I hope I won't be irr

24-02-2026 11:01

Gernot Friebes

Hi,found on a branch of Tilia, with conidia measur

23-02-2026 11:22

Thomas Læssøe

https://svampe.databasen.org/observations/10584971

29-11-2024 21:47

Yanick BOULANGER

BonjourJ'avais un deuxième échantillon moins mat

07-02-2023 22:28

Ethan Crenson

Hello friends, On Sunday, in the southern part of

19-02-2026 17:49

Salvador Emilio Jose

Hola buenas tardes!! Necesito ayuda para la ident

09-02-2026 22:01

ruiz Jose

Hola, me paso esta colección en madera de pino, t

19-02-2026 13:50

Margot en Geert Vullings

We found this collection on deciduous wood on 7-2-

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Melanospora cf. lagenaria on decaying polypore
Danny Newman, 15-12-2025 15:48
Danny NewmanMelanospora cf. lagenaria on old, rotting, fallen and still attached FBs of conk (possibly Fomes sp.)
near Purchase Road, Appalachian Highlands Science Learning Center, Great Smoky Mountains National Park, Haywood County, North Carolina, USA
https://www.inaturalist.org/observations/305939943

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.

no sequences available

photo credits: Danny Newman
micrograph credits: Danny Newman


Of what I believe are two distinct ophiostomatoid fungi shown, the larger of them is the target organism, and it is spores from this fungus which are shown in the micrographs and in the measurements below.

Spores:


(10.7) 11.6 - 13.2 (13.7) × (6.4) 7 - 8 (8.4) µm
Q = (1.5) 1.54 - 1.7 (1.9) ; N = 20
Me = 12.3 × 7.5 µm ; Qe = 1.6

Different references give different spore size ranges for M. lagenaria, and if anything our spores seem small by comparison.   Our collection would appear to constitute a range extension for M. lagenaria, if it can indeed be said to be that sp..  Is there another possibility?

Any and all help is greatly appreciated.  Additional micrographs available upon request.
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Enrique Rubio, 16-12-2025 18:26
Enrique Rubio
Re : Melanospora cf. lagenaria on decaying polypore
Hi Danny

My own european collection on Fomitopsis (Piptoporus) betulina seems to match yours well. I think you should study the hairs.
https://www.centrodeestudiosmicologicosasturianos.org/?p=25315