Accès membres

Mot de passe perdu? S'inscrire

14-05-2026 05:36

Ethan Crenson

Hi all,  I haven't paid much attention to Lachnu

16-03-2011 14:31

roman vargas alberto

Hi. I would like some opinion about this Peziza

11-05-2026 12:32

Bernard CLESSE Bernard CLESSE

Pourriez-vous m'aider à identifier cette héloti

13-05-2026 15:26

François Freléchoux François Freléchoux

Bonjour,Voici une récolte faite il y a quelques j

12-05-2026 15:41

Nicolas VAN VOOREN Nicolas VAN VOOREN

Dear Ascolovers, especially interested in Pezizale

13-05-2026 12:05

Thierry Blondelle Thierry Blondelle

Bonjour à tous,J'aimerais avoir confirmation de c

10-05-2026 23:17

Andreas Gminder Andreas Gminder

Hello,today we found in a moist steep decidous for

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

11-05-2026 20:22

Lothar Krieglsteiner Lothar Krieglsteiner

on attached twig of standing Ficus caricaquite uns

« < 1 2 3 4 5 > »
Boliniaceae (?) on twig of decideous tree/bush
Lothar Krieglsteiner, 11-06-2020 12:30
Lothar Krieglsteiner... maybe Crataegus, but I am not sure (different hosts in the vicinity).
As I collected, I thought of a Hypoxylon or similar, but the spores are quite small (about 7,5-9(9,5)/3,5-4,5) µm, and the ascus porus does not react in IKI. Maybe Camarops petersii could be an option?
First, I only discovered the old specimens (foto in the field) that did not any more contain a lot. But at home, I saw there was a good stroma also (studio foto) with many unripe, but also some ripe asci with spores.
With KOH, an olive-brown pigment is extruding, but in the slide (with water first) I saw a violet pigment in the sterile tissue - not as strong as the picture is indicating, but nevertheless present.
Best, Lothar
  • message #63646
  • message #63646
  • message #63646
  • message #63646
  • message #63646
  • message #63646
  • message #63646
Thomas Læssøe, 11-06-2020 13:21
Re : Boliniaceae (?) on twig of decideous tree/bush
I believe that I see a germ slit and an amyloid apical apparatus which also tallies with the macroscopical appearance and the pigments : a Hypoxylon (spores not particurly small for this genus) 
cheers
Thomas
Lothar Krieglsteiner, 11-06-2020 13:28
Lothar Krieglsteiner
Re : Boliniaceae (?) on twig of decideous tree/bush
Hello Thomas,
thanks for your opinion. I did not see a germ slit, but I will re-examine the specimen. And I did not notice a blue or red discolouring of the stongly visible apical apparatus. But as you suggest, I will re-examine. There is always few time after an excursion for each sample (and there are always dozens of spedimens).
Later then more,
best regards,
Lothar