21-11-2025 11:52
Jean-Luc RangerBonjour à tous, on voit toujours 2 espèces areni
21-11-2025 10:56
Christopher Engelhardt
Very small (~0,5 mm) white ascos, found yesterday
14-11-2025 16:26
Marian Jagers
Hello everyone, On dead wood of Cytisus scoparius
17-11-2025 21:46
Philippe PELLICIERBonjour,Récolté sur bois pourrissant de feuillu
20-11-2025 14:14
Mick PeerdemanFound on the leaves of 'Juglans regia' in the Neth
20-11-2025 13:07
Mick PeerdemanIn January i found these black markings on the dea
Arthoniaceae key
Jennifer Fiorentino,
09-12-2022 15:52
I am looking for an Arthoniaceae key which covers Southern European species as well. Have been trying to identify two different corticolous species of probably non-lichenised species. Both have pycnidia which produce long 8-12um conidia rather than the bacilliform conidia quoted for most species. None of my lichen keys gave me any reliable ID. So I am suspecting they are corticolous non-lichenised Arthoniaceae.
Can anyone suggest reliable keys which could be used? Thank you in advance.
Gonzalez Garcia Marta,
09-12-2022 18:23
Re : Arthoniaceae key
Hola Jennifer,
Yo tengo "A KEY TO THE LICHEN-FORMING, PARASITIC, PARASYMBIOTIC AND SAPROPHYTIC FUNGI OCCURRING ON LICHENS IN THE BRITISH ISLES" D. L. HAWKSWORTH
En dicha clave, los deuteromycetes empiezan en el punto 172.Puedes intentarlo.
Te lo envío por privado.
Saludos.
Yo tengo "A KEY TO THE LICHEN-FORMING, PARASITIC, PARASYMBIOTIC AND SAPROPHYTIC FUNGI OCCURRING ON LICHENS IN THE BRITISH ISLES" D. L. HAWKSWORTH
En dicha clave, los deuteromycetes empiezan en el punto 172.Puedes intentarlo.
Te lo envío por privado.
Saludos.
Berger Franz,
09-12-2022 22:37
Re : Arthoniaceae key
Dear, Jennifer
I would recommend to prefer determination Keys of Italic 7.0" from Universität of Trieste, chapter 42 and surrounding
YoursFFranz
P
I would recommend to prefer determination Keys of Italic 7.0" from Universität of Trieste, chapter 42 and surrounding
YoursFFranz
P
Jennifer Fiorentino,
10-12-2022 09:30
Re : Arthoniaceae key
thank you
Jennifer Fiorentino,
10-12-2022 09:38
Re : Arthoniaceae key
Dear Franz
many thanks for your comment. I use keys in ITALIC on a daily basis. I love them! Key 42 does not work out. Key 47 is more ideal as the apothecia of my specimen are clearly arthoinoid. in fact Key 47 leads me to Naevia dispersa.....with the one problem I mentioned above. N. dispersa is quoted as having bacilliform conidia but I keep finding longish conidia. Hence my dilemma.
Thanks and cheers
Jennifer
Gonzalez Garcia Marta,
10-12-2022 10:09
Re : Arthoniaceae key
Hi Jennifer,
I use the "Italic 7.0" keys every day. I adore them too. Almost all my identifications are thanks to these keys. But when I study a fresh lichen, I rarely see pycnidia and conidia, although I have seen that said page describes them.
I always wonder how they can tell if they are pycnidia typical of the species or a contamination produced by a lichenicolous fungus.
Is it possible that your fungus is a parasite that was born in the thallus?
I use the "Italic 7.0" keys every day. I adore them too. Almost all my identifications are thanks to these keys. But when I study a fresh lichen, I rarely see pycnidia and conidia, although I have seen that said page describes them.
I always wonder how they can tell if they are pycnidia typical of the species or a contamination produced by a lichenicolous fungus.
Is it possible that your fungus is a parasite that was born in the thallus?
Jennifer Fiorentino,
10-12-2022 17:23
Re : Arthoniaceae key
What you write is very plausible.
I will check lichenicolous fungi growing on Naevia which produce anomorphs similar to what I am observing. Thanks for the tip.
Eduard Osieck,
12-12-2022 15:35
Re : Arthoniaceae key
Hi all
Could somebody a link to these keys?
That would be helpful.
cheers, Eduard
Could somebody a link to these keys?
That would be helpful.
cheers, Eduard
Jennifer Fiorentino,
12-12-2022 19:24
Re : Arthoniaceae key
https://italic.units.it/index.php?procedure=idkeys
These are lichen keys mostly but some non-lichenised lichens figure in.
These are lichen keys mostly but some non-lichenised lichens figure in.
Eduard Osieck,
16-12-2022 17:46
Re : Arthoniaceae key
Thank you for the help, Eduard