18-08-2025 15:07
Lothar Krieglsteiner
.. 20.7.25, in subarctic habital. The liverwort i
02-02-2026 21:46
Margot en Geert VullingsOn a barkless poplar branch, we found hairy discs
02-02-2026 14:55
Andgelo Mombert
Bonjour,Sur thalle de Lobaria pulmonaria.Conidiome
02-02-2026 14:33
Andgelo Mombert
Bonjour,Sur le thalle de Peltigera praetextata, ne
31-01-2026 10:22
Michel Hairaud
Bonjour, Cette hypocreale parasite en nombre les
02-02-2026 09:29
Bernard CLESSE
Bonjour à toutes et tous,Pour cette récolte de 2
01-02-2026 19:29
Nicolas Suberbielle
Bonjour, Marie-Rose D'Angelo (Société Mycologiq
31-01-2026 09:17
Marc Detollenaere
Dear Forum,On decorticated wood of Castanea,I foun
29-08-2025 05:16
Francois Guay
I think I may have found the teleomorph of Dendros
Hello,I would welcome your advice on this Bryoscyphus.
It was collected in Slovakia, Mala Fatra NP, in a gorge, on old thalli of Preissia quadrata, 10 May 2015.
Apothecia grew in small groups, were slightly convex or plane, +- rounded from an upper view, pale brown, 0.5-2.5 mm in diameter, shortly stipitate.
Asci cylindrical, inoperculate, octosporic, uniseriate or biseriate, IKI+, 130-160 x 9-12 micrometers.
Spores unequilateral, smooth, with many small droplets, 12.5-15(17) x (4.5)5-5.5(6) micrometers.
Paraphyses filled with small droplets, hyaline or pale brown, septate, branched, with an obtuse apex, 3-3.5 micrometers broad, straight.
Med. excipulum consisting of cylindrical thin-walled cells (2.5-4 micrometers broad).
Ectal excipulum combination of textura angularis and text. prismatica. Hair-like projections not observed.
No combination of characters in the key in the article by Verkley et al. 1997 fits perfectly. Preissia (member of Marchantiaceae) is not mentioned as a substrate in any of the species in the key. B. dicrani and B. turbinatus have totally different hosts, so I´m considering B. atromarginatus, B. marchantiae and B. conocephali. The width of spores is between B. atromarginatus and B. marchantiae, asci are too long for B. atromarginatus, spore shape wrong for B. marchantiae. For B. conocephali, the hairs are missing.
Zuzana
Je pense qu'il s'agit de B. atromarginatus Verkley, van Aa & G. de Cock. Voir ma publication en dossier attaché.
Amicalement
René
DOUGOUD, R. (2003) - Bryoscyphus atromarginatus. - Mycol. Montenegrina VI: 7-11.
René
Dear Rene,
I would also like to receive the file. Thanks in advance,
Yours, Lothar Krieglsteiner
Bonjour Zuzana, René et tous,
Belle récolte et belles photos.
I did not recognize the spores of a last year collection I called B. atromarginatus (on Lunularia cruciata). As in René's paper (which I also used for identification) the spore shape is different , along with guttulation . Spore width of my collection (MH 120114) never exceed 4.5 µm and there always is an empty area in the spore guttuation.
Asci never exceed 120 (130) µm
I do not know B. marchantiae.
I attach pics .Amitiés Michel
this is actually striking how the nucleus is in the lower part of the spore in your fungus. In all my available images I see the empty region +/- in the middle part.
Spore width seems variable, I have 3.5-4.5 up to rarely 5-5.5 µm.
Of course, I am not sure if all is the same, but i would at first sight think that yours belongs here.
Zotto
In my collection the spores often have an empty zone too, but rather small. I add some new photos.
Comparing my data with those in René´s article, I can see few differences - the substrate, somewhat different size of spores and asci (I measured everything fresh, in water). If I understand the French text well, René´s paraphyses were simple (mine are sometimes branched, see the photo with two lateral branches). I also never observed septa in the spores.
But these differences are probably not very important.
Best regards, Zuzana
Septation occurs only in overmature spores in this group, so it depends on the ripeness of the apos.
Zotto
