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13-01-2026 07:57

Danny Newman Danny Newman

cf. Bombardia on indet. decorticate woodAppalachia

11-01-2026 20:35

Josep Torres Josep Torres

Hello.A very tiny pyrenomycete sprouting sparsely

13-01-2026 10:13

Danny Newman Danny Newman

Cordieritidaceae sp. on indet. wood w/ Hypoxylon s

13-01-2026 07:28

Danny Newman Danny Newman

Chlorociboria glauca on indet. decorticate logThe

13-01-2026 07:14

Danny Newman Danny Newman

Neodasyscypha cerina on indet decorticate logThe S

13-01-2026 09:10

Danny Newman Danny Newman

Dasyscyphella chrysotexta on indet. decorticate ha

13-01-2026 08:43

Danny Newman Danny Newman

Tricladium varicosporioides on indet. decorticate

13-01-2026 08:49

Danny Newman Danny Newman

Coccomyces sp. on fallen Rhododendron leavesPretty

12-01-2026 22:02

Ethan Crenson

Hello all, I am hoping someone will have some ins

13-01-2026 07:51

Danny Newman Danny Newman

Atrocalyx sp. on indet. herbaceous stemAppalachian

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Hymenoscyphus on branches of rubus?
Ralph Vandiest, 26-09-2013 18:30
Ralph Vandiest

Hello,

I found these stalked species on dead rubus branches. They are ivory coloured, not reddening when damaged and measure between 1&1,5mm. Spores are scuteloid 3,5/4x19/25µm and the asci are 6/10x95/103. Can anyone tell me what this is?

regards,
Ralph  

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Hans-Otto Baral, 26-09-2013 20:54
Hans-Otto Baral
Re : Hymenoscyphus on branches of rubus?
I would place it in hymenoscyphus scutula, despite the apparent absence of distinct bristles at the spore ends.

Zotto
Ralph Vandiest, 26-09-2013 22:01
Ralph Vandiest
Re : Hymenoscyphus on branches of rubus?
Hello Zotto,

thanks for your answer. I don't see the reddening either. Can it be because my sample is already 1 week old?
PS I will take again a look at the spores to see if I can find any bristels.

regards,
ralph
Hans-Otto Baral, 26-09-2013 22:28
Hans-Otto Baral
Re : Hymenoscyphus on branches of rubus?
Did you read about reddening? On your photpo I see slight red-brown areas. This is by oxidation of the guttules (VBs) in the paraphyses, and a general feature in Hymenoscyphus.
Ralph Vandiest, 26-09-2013 22:31
Ralph Vandiest
Re : Hymenoscyphus on branches of rubus?
no I didn't read about reddening but I saw it in a key to this genus. sorry, my mistake