28-04-2026 20:07
Lothar Krieglsteiner
... on twig in the air at standing Ceratonia siliq
04-05-2026 18:13
Stephen Martin Mifsud
ID request for what seems to be a true aquatic fun
04-05-2026 16:39
Stephen Martin Mifsud
ID request: This specimen was collected in Malta o
04-05-2026 09:50
Castillo Joseba
Me mandan el material seco de Galicia,(España) re
02-05-2026 12:42
Alain BRISSARDBonjour à tousJeuidi 30 avril dernier on m'a remi
02-05-2026 13:06
Pauline. PennaBonjour Please can someone help me with this id
01-05-2026 22:45
Thierry Blondelle
Bonjour à tous, Une récolte sur bouse séchée d
14-04-2026 05:32
Ethan CrensonHi all, A few weeks back a friend pointed out som
28-04-2026 20:33
Vitus SchäfftleinHello, I found Trochila ilicina on Ilex aquifoliu
Dark spots on Caragana
Marja Pennanen,
11-01-2015 16:16
these about 0,2 mm wide spots on Caragana turned to be pyrenomycetes.
They are much wider than high and seem to grow under the outermost layer of the bark.
The spores are at least now hyaline, 18-24x4-6 and contain 4 droplets.
The asci are about 70-120x9-12.
Help with the determination is truly welcome: Marja
Alain GARDIENNET,
11-01-2015 22:02
Re : Dark spots on Caragana
Hi Marja,
Probably an Arthopyrenia species.
Alain
Marja Pennanen,
12-01-2015 13:44
Re : Dark spots on Caragana
Cher Alain,
merci!
So, it may be a lichen. This is an interesting piece of information for me.
I have thought, that lichens grow on a surface not under it...
Marja
merci!
So, it may be a lichen. This is an interesting piece of information for me.
I have thought, that lichens grow on a surface not under it...
Marja
Björn Wergen,
28-01-2015 12:30
Re : Dark spots on Caragana
Hi Marja,
indeed Arthopyrenia. This genus belong to a group of lichens called "pyrenocarpous lichens", because they simulate pyrenomycetes fruitbodies. They occur on the bark of various deciduous trees, in my region Arthopyrenia cinereopruinosa is commonest.
regards,
björn
indeed Arthopyrenia. This genus belong to a group of lichens called "pyrenocarpous lichens", because they simulate pyrenomycetes fruitbodies. They occur on the bark of various deciduous trees, in my region Arthopyrenia cinereopruinosa is commonest.
regards,
björn