13-01-2026 07:57
Danny Newman
cf. Bombardia on indet. decorticate woodAppalachia
11-01-2026 20:35
Josep Torres
Hello.A very tiny pyrenomycete sprouting sparsely
13-01-2026 10:13
Danny Newman
Cordieritidaceae sp. on indet. wood w/ Hypoxylon s
13-01-2026 07:28
Danny Newman
Chlorociboria glauca on indet. decorticate logThe
13-01-2026 07:14
Danny Newman
Neodasyscypha cerina on indet decorticate logThe S
13-01-2026 09:10
Danny Newman
Dasyscyphella chrysotexta on indet. decorticate ha
13-01-2026 08:43
Danny Newman
Tricladium varicosporioides on indet. decorticate
13-01-2026 08:49
Danny Newman
Coccomyces sp. on fallen Rhododendron leavesPretty
12-01-2026 22:02
Ethan CrensonHello all, I am hoping someone will have some ins
13-01-2026 07:51
Danny Newman
Atrocalyx sp. on indet. herbaceous stemAppalachian
Bonsoir tousthe 'foam-cakes' which can develop in fast flowing streams are a very interesting habitat for the so-called 'Ingoldian Fungi'.
Examples of some of the often distinctive conidia found can be seen here:
http://www.ascofrance.com/search_recolte/3964
http://www.ascofrance.com/search_recolte/3943
http://www.ascofrance.com/search_recolte/3010
Amongst these "aquatic hyphomycetes" one often sees diatoms and other algae, lepidopteran wing scales, pollen etc.; and also chance fungal spores from unknown fungi (which may or may not be aquatic in origin). Normally one ignores these, but occasionally one finds something so striking there may be a hope of getting an identification, even from a single spore. Here is an example of this and I am hoping that such a distinctive spore (which is surely an ascospore - Pleosporales or similar?) will be recognised by someone here. Notable are the large size of the spore and the very distinctive hyaline tips at each end (which are not formed within a single cell - the terminal cells are part-coloured). It may not be evident from the photograph, but the spore is 8-septate.
As ever any suggestions would be very welcome.
Chris
could be an ascospore of Trematosphaeria hydrela.
Best wishes,
Gernot
Exactly !
It's more common to find conidias of the anamorphic stages, ingoldian fungi, but sometimes there are ascospores of the sexual stage. One can also find non-aquatical spores.
Alain
Hi Chris and Gernot,
I fully agree with Gernot: this should be the spore of Trematosphaeria hydrela! I quite often found these species on deciduous wood in rivulets.
Regards from Lothar