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16-02-2026 18:34

Exosporium tiliae
Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

08-12-2025 17:37

possibly related to Melanomma - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

16-02-2026 17:14

Cucurbidothis specimens?
Joanne Taylor

Last week we published the following paper where w

16-02-2026 17:13

Cucurbidothis specimens?
Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

recherche de publi
Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

16-02-2026 00:05

Literature request
Maren Kamke Maren Kamke

Good evening, I am looking for the following pape

16-02-2026 11:53

Sarcoscypha coccinea or austriaca?
Joeri Belis

between leaf litter on twig in young salix growth.

14-02-2026 22:45

Vexillomyces/Claussenomyces
Tomaz Vucko Tomaz Vucko

Hy!I would ask for some help determing this specie

13-02-2026 03:30

Unknown near Pseudohalonectria
Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

15-02-2026 20:28

Mollisia
éric ROMERO éric ROMERO

Bonjour tous, Un Mollisia qui me pose problème..

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Odontotrema minus
Nina Filippova, 26-01-2013 18:32
Odontotrema minus - probably, since it has broad asci, thick apical cap which deffusely J+ blue, spores ovoid, and apothecia immersed in wood, hemispherical, with serrate pore.

It grew on decorticated bleached wood of standing-dead pines (Pinus sylvestris) (N61,054422° E69,456725°).


Apothecia submerged in wood, spherical to deep cupulate, up to 300 mk wide, hymenium grayish, yellowish, smooth, outer surface rough, dark brown, radially splitted.
Excipulum from thick mass of cylindrical hyphae (not well distinguishable); asci bottle-shaped, bulged in the middle, extending in length when mature, clampless, near 60 x 15 mk, wall of ascus with amyloid reaction in upper part, pore inamyloid; spores ellipsoid, 3-segmented when mature, 12,7 (11,4-14) x 5,7 (5,3-6,1) mk; paraphyses filiform (1 mk thick), rare segmented at base.


I used the key in: Sherwood-Pike, M.A., 1987. The ostropalean fungi.

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Hans-Otto Baral, 26-01-2013 20:15
Hans-Otto Baral
Re : Odontotrema minus
I have here a very similar collection identified as O. minus, and the only thing I wondered was that it grew on bark instead on wood. Now I see that yours is on wood and your spores contain a lot of oil drops while mine are almost empty. In my experience with oil drops in spores the two can hardly be the same species. Regrettably, Sherwood's description does not mention the spore contents.

So I assume yours is the right O. minus.

Zotto
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Nina Filippova, 26-01-2013 20:48
Re : Odontotrema minus
Thank you, - there is some difference in paraphyses as well (in your drowing they are segmented and thicker, in my specimen rare segmented and about 1 mk).?
Hans-Otto Baral, 26-01-2013 22:01
Hans-Otto Baral
Re : Odontotrema minus
I am not sure about that. At least from your photos. I assume you used Melzer? My drawing shows living paraphyses and therefore the septa are better visible. The cells would shink when adding MLZ, and the septa less clear.

Sherwood's specimen has also quite many septa but what she draws is actually the dead plasma, not the cell wall, so the septa look thick.

Zotto
Nina Filippova, 28-01-2013 17:57
Re : Odontotrema minus
You are right, paraphyses are actually thicker and with septa when i used water or KOH, scarsely covered by a gel, with blunt tips (as it is in exiccata, not live specimen). There uploaded some better spore picture as well.
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Hans-Otto Baral, 28-01-2013 18:01
Hans-Otto Baral
Re : Odontotrema minus
Very good! Now I fear only a type study would tell us more. Or the species is variable.