Accès membres

Mot de passe perdu? S'inscrire

27-08-2023 23:05

Andreas Gminder Andreas Gminder

Dear colleages,today I found a strinkingly bright

26-08-2023 20:03

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos.Subo unas fotos de un Ascobolus que e

05-06-2023 11:09

Alex Konig Alex Konig

Hello fun-guys. I found around march , a little a

27-08-2023 10:31

Castillo Joseba Castillo Joseba

Del 11 de agosto  en bosque de abetosA ver si se

16-10-2022 11:22

Andgelo Mombert Andgelo Mombert

Bonjour, Nous n'avons toujours pas récolu l'éni

25-07-2023 09:34

Andgelo Mombert Andgelo Mombert

Bonjour à tous, Sur branche morte décortiquée

22-08-2023 18:51

Shane John

I am trying to locate a paper by Kirk (1984) in My

23-08-2023 17:29

Bernard Declercq Bernard Declercq

Hello,I am looking for following paper:E Hüsey?n,

23-08-2023 07:19

Zuidland Peter

Hello all,I need assistance with the ID of this in

22-08-2023 20:38

Enrique Rubio Enrique Rubio

Hi friendsThese isolated, non-stromatic, blackish,

« < 60 61 62 63 64 > »
Hypomyces spec. bright orange
Andreas Gminder, 27-08-2023 23:05
Andreas GminderDear colleages,
today I found a strinkingly bright orange Hypomyces species in a beech forest near a rivulet in many spots and always seemingly without contact to fungi. I understand that Hypomyces species are myco-parasites, but I have not been able to detect a possible host, though several of the stromata were still unripe and should be on a still visible host ....
Spores are distictly warty in cotton blue, appr. 23 x 6 µm and the appendices are cyanophilous and are additionally 3-4 µm on each side.
Can someone give me a hint?
thank you and all the best,Andreas
  • message #76824
  • message #76824
  • message #76824
  • message #76824
  • message #76824
Ueli Graf, 27-08-2023 23:44
Ueli Graf
Re : Hypomyces spec. bright orange
Hallo Andreas

könnte es nicht Hypomyces rosellus sein.

Habe den auch schon gehabt auf Blätter.

Gruss

Ueli
Jacques Fournier, 28-08-2023 09:21
Jacques Fournier
Re : Hypomyces spec. bright orange
Hi Andreas,
H. armeniacus (= ochraceus), in shades of orange, is known to develop mostly on Russulales and to often completely destroy its host before spreading on surrounding litter, even at base of living trunks. Your spores are a bit too small to fit this species but they may be immature. See Rogerson & Samuels 1994, Mycologia, 86: 839-866.
Good luck!
Jacques
Viktorie Halasu, 28-08-2023 13:02
Viktorie Halasu
Re : Hypomyces spec. bright orange
Hello Andreas,
 
wasn't there some corticioid fungus nearby? I had this Hypomyces, tentatively ID'd as H. corticiicola, growing on a piece of bark partly buried in soil, with Sebacina cf. incrustans growing on the lower side of the bark. Spore size looks similar. 

Viktorie 
  • message #76829
  • message #76829
  • message #76829
  • message #76829
Patrice TANCHAUD, 28-08-2023 13:12
Re : Hypomyces spec. bright orange
Bonjour Viktorie et tous,

for H. corticiicola, is the KOH reaction purple like for H. aurantius ? Have you tested it ?
Thanks.

Pour H. corticiicola, est-ce que la réaction au KOH est pourpre comme pour H. aurantius ? L' as-tu testé ?
Merci.

Patrice
Viktorie Halasu, 28-08-2023 14:38
Viktorie Halasu
Re : Hypomyces spec. bright orange
I've seen perithecium wall discoloring in KOH to yellow to orange-yellow. I the protologue it is described as either turning bright yellow or not reacting at all. I didn't test LA and don't have the specimen anymore.
Lothar Krieglsteiner, 03-09-2023 11:33
Lothar Krieglsteiner
Hypomyces armeniacus - I would agree to Jacques
Hello together,
as it is sometimes coincidence, yesterday I found this Hypomyces on the ground in a wood I quite often visit. I never found this before, and it looks to me as it should be the same than Andreas fungus. My specimen is quite premature, only some asci contain ripe spores, and I found not a single spore outside the ascus.
The macroscopic appearance to me was like thrown-away peels of tangerine, and I had to look with the lens (in the dark forest) to see the perithecia and to regard it as fungus.
About the ecology: the forest round the specimen (not directly where it grew, unfortunately, but few meters away) was full of decaying and decayed remains of Russula specimens, what is also proved by the very common growth of Asterophora parasitica. I did not notice a corticioid fungus and the habitat did not look as if this would be very likely. As I also find the pictures googled for H. armeniacus fitting well I consider my specimen to be this species.
KOH did not lead to a notable discoloring of the perithecia(l wall) neither macroscopic (stayed the same bright orange) nor microscopical.
Yours, Lothar
  • message #76833
  • message #76833
  • message #76833
  • message #76833
  • message #76833