Yellow Nectria (aff. pallidula?)

13-01-2026 07:28

Chlorociboria glauca on indet. decorticate hardwood log - 303627368

Danny Newman

Chlorociboria glauca on indet. decorticate logThe

13-01-2026 10:13

Cordieritidaceae sp. on indet. wood w/ Hypoxylon sp. - 305337857

Danny Newman

Cordieritidaceae sp. on indet. wood w/ Hypoxylon s

13-01-2026 07:14

Neodasyscypha cerina on indet decorticate log - 303463318

Danny Newman

Neodasyscypha cerina on indet decorticate logThe S

13-01-2026 09:10

Dasyscyphella chrysotexta on indet. decorticate hardwood - 303900282

Danny Newman

Dasyscyphella chrysotexta on indet. decorticate ha

13-01-2026 08:43

Tricladium varicosporioides on indet. decorticate stick - 303997395

Danny Newman

Tricladium varicosporioides on indet. decorticate

13-01-2026 08:49

Coccomyces sp. on fallen Rhododendron leaves - 305874978

Danny Newman

Coccomyces sp. on fallen Rhododendron leavesPretty

12-01-2026 22:02

Coryneum (?) acervuli on oak (?) branch

Ethan Crenson

Hello all, I am hoping someone will have some ins

13-01-2026 07:57

cf. Bombardia on indet. decorticate wood - 304222307

Danny Newman

cf. Bombardia on indet. decorticate woodAppalachia

13-01-2026 07:51

Atrocalyx sp. on indet. herbaceous stem - 303869374

Danny Newman

Atrocalyx sp. on indet. herbaceous stemAppalachian

11-01-2026 20:35

Pyrenomycete on Conifer Wood

Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

Yellow Nectria (aff. pallidula?)

Edvin Johannesen, 18-01-2019 22:14

Dear all,

This nectriaceous species was growing erumpent on twigs of old, but living plum tree (Prunus). Ascospores measure ca. 13 x 4-6 microns, and become warted and 1-septate at maturity. Is this sufficient for identification or does it need further studies?

Christian Lechat, 19-01-2019 06:20

Re : Yellow Nectria (aff. pallidula?)

Hi Edvin,

maybe your fungus is Bionectria. Vertical section through ascomatal wall could be very useful as well as the reaction in KOH and lactic acid. Please, check if there is an asexual state on the substrate or around the stromata, which should be clonostachys-like.

All the best,

Christian

Edvin Johannesen, 19-01-2019 11:36

Re : Yellow Nectria (aff. pallidula?)

Thanks, Christian. Do you mean cotton blue or plain lactic acid (which I do not have)? What to look for? Do you have a good article on Bionectria? I have limited access to literature on the internet.

Best regards,

Edvin

Edvin Johannesen, 19-01-2019 13:47

Re : Yellow Nectria (aff. pallidula?)

The ascomatal wall appears two-layered; an outer yellow and an inner hyaline layer. I have also tested iodine reactions. Neither Barals (alone) or Lugol after pre-treatment with 3% KOH gave any detectable staining.