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Hello.A cerebriform ascomycete sprouting scattered

13-06-2025 16:34

Bonjour,Un petit discomycète qui me résiste. Il
Trichophaea gregaria?
Malcolm Greaves,
04-07-2017 15:48
The spores are 19-20 x 10 ellipsoid/fusiforme.
The hairs thick walled, septate, some slightly swollen towards the base and up to 300µ long. Paraphyses thin and slightly swollen at the tip.
Trichophaea gregaria seem a good fit but I could find no ornamentation on the spores even in LCB.
Am I right with Trichophaea and could it be T gregaria?
Thanks
Mal
Nicolas VAN VOOREN,
04-07-2017 22:55

Re : Trichophaea gregaria?
Are your sure that the spores are mature?
Usually T. gregaria has spores longer than 20 µm, ornamented by small cyanophilous warts.
Usually T. gregaria has spores longer than 20 µm, ornamented by small cyanophilous warts.
Malcolm Greaves,
05-07-2017 00:53
Re : Trichophaea gregaria?
Thanks Nicolas
I will try for a better spore drop and check the results.
Mal
I will try for a better spore drop and check the results.
Mal
Malcolm Greaves,
05-07-2017 12:38
Re : Trichophaea gregaria?
A much better result this time. Spores (19) 21.04 (23.4) x (9.4)10.66(11.56) with ornamentation which according to the diagrams in the Bronckers key looks more like T pseudogregaria.
Mal
Ps could it possibly just be humaria hemispherica? The largest apothecia was 2.9mm across
Mal
Ps could it possibly just be humaria hemispherica? The largest apothecia was 2.9mm across
Viktorie Halasu,
05-07-2017 17:29

Re : Trichophaea gregaria?
Hello Mal,
Humaria h. has two big LBs (and a few small ones) in living spores.
Viktorie
Humaria h. has two big LBs (and a few small ones) in living spores.
Viktorie
Malcolm Greaves,
05-07-2017 19:34
Nicolas VAN VOOREN,
05-07-2017 19:47

Re : Trichophaea gregaria?
Spore shape, size and ornamentation fit well with T. pseudogregaria.
Malcolm Greaves,
06-07-2017 12:18
Re : Trichophaea gregaria?
Thanks everyone.
Mal
Mal