Accès membres

Mot de passe perdu? S'inscrire

02-05-2026 12:42

Alain BRISSARD

Bonjour à tousJeuidi 30 avril dernier on m'a remi

02-05-2026 13:06

Pauline. Penna

Bonjour  Please can someone help me with this id

01-05-2026 22:45

Thierry Blondelle Thierry Blondelle

Bonjour à tous, Une récolte sur bouse séchée d

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

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

14-04-2026 05:32

Ethan Crenson

Hi all, A few weeks back a friend pointed out som

28-04-2026 20:33

Vitus Schäfftlein

Hello, I found Trochila ilicina on Ilex aquifoliu

30-04-2026 10:43

Castillo Joseba Castillo Joseba

Me mandan el material seco de Galicia, España, 

30-04-2026 10:28

Rot Bojan

Hello, by appearance I would say that I am dealing

27-04-2026 18:48

Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

« < 1 2 3 4 5 > »
Hymenoscyphus on Juniperus
Marja Pennanen, 30-08-2010 09:14
Hello,
as I mentioned I found something on the needles and twigs of Juniperus, which I naturally couldn't determine.
These are about 0.3-0,7 mm wide and 1-2 mm high.
The base of the stipe may be darker.
  • message #12692
Marja Pennanen, 30-08-2010 09:16
Re:Hymenoscyphus on Juniperus
The spores are multiguttulate, 12-17x3-4 and asci 75-95x6-8, IKI+.
Paraphyses are septate, some with VB:s and 2-2,5 micrometers wide.
Poor photo of the shape of the spores:
  • message #12693
Marja Pennanen, 30-08-2010 09:22
Re:Hymenoscyphus on Juniperus
Another view of microscophy.

Why are these Hymenoscyphuses so hard fo me to open?
I've been able to determine lately only H. kermesinus, H. scutula, H. salicellus and H. caudatus, which are allready quite familiar to me.

Desperate Marja
  • message #12694
Hans-Otto Baral, 30-08-2010 12:41
Hans-Otto Baral
Re:Hymenoscyphus on Juniperus
Hymenoscyphus is one of the most difficult genera. especially those with scutuloid spores are a hard nut. I do not see clear in such species like H. caudatus and even H. scutula.

Yours has quite narrow spores, and at the moment I have no suggestion, sorry. Important would be to know the croziers, actually. The ascus base is quite well seen on your photo, but should be viewed with oil immersion. I am sure you can learn that, I also must often search some time to see the feature clearly. It depends on the orientation, on the living state, on maturity etc., all this can obscure the feature. Best is to make a section and look at living cells.

Zotto
Marja Pennanen, 30-08-2010 13:43
Re:Hymenoscyphus on Juniperus
Hello Zotto,

my problem is that I've got almoust no practical education to mycology or nothing else, too.
I've just learned myself on the way.
Just dived (fast and deep?) into it and hoped to survive ;).

Now I'm waiting in despair, when the local university needs my loaned microscope for educational purposes.

Marja