13-01-2026 09:10
Danny Newman
Dasyscyphella chrysotexta on indet. decorticate ha
13-01-2026 08:49
Danny Newman
Coccomyces sp. on fallen Rhododendron leavesPretty
13-01-2026 08:43
Danny Newman
Tricladium varicosporioides on indet. decorticate
12-01-2026 22:02
Ethan CrensonHello all, I am hoping someone will have some ins
13-01-2026 07:57
Danny Newman
cf. Bombardia on indet. decorticate woodAppalachia
13-01-2026 07:51
Danny Newman
Atrocalyx sp. on indet. herbaceous stemAppalachian
13-01-2026 07:28
Danny Newman
Chlorociboria glauca on indet. decorticate logThe
13-01-2026 07:14
Danny Newman
Neodasyscypha cerina on indet decorticate logThe S
11-01-2026 20:35
Josep Torres
Hello.A very tiny pyrenomycete sprouting sparsely
12-01-2026 05:24
Danny Newman
Cyathicula coronata on Urtica dioicaCataloochee Di
Dear FriendsToday, during the review of other specimens from the Carpathians, I found Acanthostigma sp. sample (unfortunately, slightly immature). I think it can be Acanthostigma scopulum Peck.
I am never seen this species earlier, therefore I can not be sure.
Do you familiar with this species?
Grateful before,
Alex
Acanthostigma-Promputtha-Miller-Mycologia-2010-0001.pdfI don't think this is Acanthostigma. To me, your find resembles more to a Tubeufia.
Best wishes,
Gernot
Thank you.
I contacted about this species with Andrew Miller. Till now we have not come for a unique solution of this question. Our first thought was that it is Tubeufia aurantiella, but the degree of development of setaes favors Acanthostigma.
Alex
In various sources information about Acanthostigma (=Tubeufia) scopulum: the size and presence of septa in setaes, as well as pseudothecia colour, size of asci and ascospores for this species are different.
In Kodsueb, R. et al, Mycologia, 2004, 96(3): 667
Acanthostigma scopulum (Cooke & Peck) Peck, Bull. New York State Mus. 1:22 (1887) (figs. 1-6)
Ascomata 145-250 µm diam, superficial, globose, solitary or gregarious, dark brown to black, membranous, ostiolate, with setae; setae (56-)80-90(-99) µm long, 4-6 µm wide at base, 1.5-2 µm wide at apex, dark brown, 1-2-septate, thick-walled, straight. Asci (64-)90-120(-130) x 8-10 µm (av. = 103 x 9.2 µm, n = 20), 8-spored, cylindric-clavate, bitunicate, short stalked, pseudoparaphyses. Ascospores (66-)70-85(-90) x 3-3.5(-4) µm (av. = 78 x 3.4 µm, n = 30), fasciculate, long-fusiform to cylindrical-fusiform, hyaline, straight or slightly curved, (5-)9-12-septate, smooth-walled, guttulate, lacking appendages and sheaths.
Substratum. - Wood submerged in streams, decaying wood (Fagus sylvatica, Pinus sp. and Tsuga sp.)
Known distribution. - Australia, Europe, Hong Kong and U.S.A.
In Barr apical setaes are non septate.
I have some news!
Now I receive the letter about my sample from Kevin Hyde (one of the world experts in Acanthostigma).
He wrote:
Dear Alex
Yes I think so (Acanthostigma scopulum) although these taxa (Acanthostigma scopulum and Tubeufia aurantiella) do not split into Tubeufia and Acanthostigma when we do molecular work.
If you want to send me some dried material I will try to isolate it and sequence it
Best wishes
Kevin