11-01-2026 20:35
Josep Torres
Hello.A very tiny pyrenomycete sprouting sparsely
09-01-2026 17:41
Arnold BüschlenHallo, F. dilatata wird von vielen Bryoparasiten
10-01-2026 20:00
Tom SchrierHi all,We found picnidia on Protoparmeliopsis mur
07-01-2026 22:22
Danny Newman
Tatraea sp. on indet. hardwood The Swag, Great Sm
10-01-2026 01:18
Danny Newman
cf. Neovaginatispora fuckelii on indet. shrub Pre
07-01-2026 10:24
Danny Newman
Pezicula sp. on indet. hardwood Appalachian Highl
09-01-2026 10:08
Blasco Rafael
Hola, en el mismo habitat que la anteriorRetamaDia
08-01-2026 21:22
Blasco Rafael
Hola, He recogido esta muestra de Orbilia sobre Re
07-01-2026 17:29
Marc Detollenaere
Dear Forum,On a barkless Populus I found some smal
10-11-2021 17:33
Riet van Oosten
Add-on topic http://www.ascofrance.com/forum/7059
Hi to everyoneThis superficial, globose, finely craked, blackish-brown stromata, 10 mm high 15 mm broad is narrowly attached on bark of Acacia melanoxylon together with stromata of Daldinia sp., Jumillera cinerea and Nemania aureolutea.
The small monostichous perithecia are more or less globose, 0.6-0.8 x 0.5-0.7 mm, with a roundish conspicuous papilla
KOH-extractable pigments brightly greenish. Asci long stipitate 225-262 x 9-10, pars sporifera 142-160, 8-sspored, with a conspicuous hat shaped apical apparatus deeply blue in Mlz. and IKI, longer than broad. Ascospores olive brownish, 21-27 x 7-8.5, with a germ-slit shorter spore lenght on the less convex side. Perispore indehiscent in KOH.
Could be a penzigioid Xylaria species? Are normal the existence of KOH-extractable pigments for these fungi?
Thanks again
this is indeed a nice penzigioid Xylaria matching no known species in the literature. You are right, the greenish pigments in KOH are rarely encountered in this genus, they are just known from tropical taxa like X. telfairii or X. olobapha and relatives. Moreover the reddish brown coating and the ascospore morphology set it apart from species with similar stromata.
Xylariaceae are often endophytic and they likely travelled with their host from Australia and like your Daldinia represent extra-European species.
I suggest you send the Xylaria to Yu-Ming Ju in Taiwan who is very interested in penzigioid taxa and who will cultivate it. If the material is plentiful, I would be happy to have some stromata too...
Saludos,
Jacques
Hi Jacques
Allways your magical help!
I can send you the only one stromata that I have found. Do you want it? The Daldinia species on Acacia m. with greenish pigments will be sent to Marc Stadler for to study it.
Thanks again
Yes, send it over, I will forward it to Yu-Ming.
Jacques