24-04-2024 21:54
éric ROMEROBonjour, J'ai trouvé ce Lasiobolus sur laissées
23-04-2024 15:18
Lothar Krieglsteiner... but likely a basidiomycete. I hope it is o.k.
23-04-2024 13:17
Edouard EvangelistiBonjour à tous, Je viens de récolter ce que je
23-04-2024 21:49
Ethan CrensonHello all, A friend recently found this orange as
22-04-2024 11:52
Zuzana Sochorová (Egertová)Hello,I made a loan of a collection of Microstoma
11-01-2022 16:36
Jason KarakehianHi does anyone have a digital copy of Raitviir A (
22-04-2024 20:38
Miguel Ángel RibesGood afternoon.Does anyone know this anamorph?It g
19-04-2024 14:28
B ShelbourneCudoniella tenuispora: Distinctive macro and habit
So I am confident that this is Discostroma tostum, a common species on stems of Chamerion and Epilobium, but not associated with Oenothera. An online search has only come up with a single possible incidence: https://www.discoverlife.org/mp/20l?id=BPI611108 (unfortunately the hyperlink under "More details" doesn't seem to work). The jump from Epilobium to Oenothera does not seem too unusual, as molecular work has shown the two genera to be monophyletic.
I would be interested to know if anyone else has come across this fungus on any hosts other than Epilobium, and would encourage people to have a look at Oenothera in their areas. One thing that has arisen from this exercise is that the illustrations in Dennis (1981) and Ellis & Ellis (1985) are rather poor - I suspect this is due to "fungarium mycology" rather than vital mycology and this has contributed to the disparity in spore measurements. Although I have used the name Discostroma tostum, there is a strong case, under the "one fungus, one name" criterion, for its being called Seimatosporium tostum (Berk. & Broome) Rossman & W.C. Allen - see Rossman et al. in IMA Fungus, 7, (2016) p.5.
Cordialement
Chris
the link to BPI works now, it lists D. Hruby's 1928 collection from Rottigeltal near Krumau in Moravia (with current names: the valley of Rokytna river near Moravsky Krumlov). "D. Hruby" might be an error in first name, as Johann Hruby published in 1928 a collection od Paradidymella tosta on Oenothera biennis from near a large viaduct near Eibenschitz (= Ivancice). Rokytna river actually connects these two towns, so it might be the same locality. "Didymella torta" (typographic error?) is also listed in Hruby (1928): Die Pilze Mährens und Schlesiens. Hedwigia 68, but without locality or host.
A Paradidymella tosta specimen was also distributed in Reliquiae petrakianae no. 77, C. Scheuer wrote that BPI got the first five complete fascicles (and fasc. 6-14 partially). Perhaps that's the specimen on BPI website? edit: but the specimen held in CUP has Epilobium as host (https://mycoportal.org/cup/mycology/RelPetrak0/Rel.Petrak.0077.jpg).
Best regards,
Viktorie
Johann Hruby (1928): Die pflanzengeographischen Verhältnisse Westmährens. – Verhandlungen des naturforschenden Vereines in Brünn – 62: 30 - 77. https://www.zobodat.at/pdf/Verh-naturf-Ver-Bruenn_62_0030-0077.pdf
Christian Scheuer (1992): Reliquiae Petrakianae - Alphabetisches Gesamtverzeichnis und Corrigenda (Cumulative Index and Corrigenda).