Accès membres

Mot de passe perdu? S'inscrire

01-12-2023 21:54

Marian Jagers Marian Jagers

Does anyone recognize this species? Apothecia in

04-12-2023 08:32


Bonjour, récolte réalisée au sol dans un parc,

04-12-2023 10:01

François Bartholomeeusen

Dear forum participants, On a thin twig of Myrica

03-12-2023 19:21

ruiz Jose antonio

Hola a todos, en un talud cercano a un riachuelo,

28-11-2023 23:10

Villalonga Paco

On basic soil in humid bank, Teruel, Spain, around

02-12-2023 21:21

Elisabeth Stöckli

Bonsoir, Récolte en milieu incendié, apothécie

25-11-2023 14:49

Kees van Oorde Kees van Oorde

Very small fruiting bodies on affected leaves. Fou

30-11-2023 14:33

Béatrice Senn-Irlet

alll issues of Mycologia Helvetica (1983-2000) are

28-01-2014 10:50

Gernot Friebes

Hi,I'm looking for these three standard references

25-11-2023 18:14

Danny Newman Danny Newman

higher resolution images available at inaturalist.

« < 1 2 3 4 5 > »
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.


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!
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. 

  • 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 ?

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

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