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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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Bisporella citrina??
William Slosse, 09-02-2016 20:32
William Slossegrowing on fallen dead branches of birch in old dunearea.
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Hans-Otto Baral, 09-02-2016 20:51
Hans-Otto Baral
Re : Bisporella citrina??
I think it is Calycina (earlier Bisporella) clariflava (= Bisporella sulfurina)

If you check the iodine reaction it should be negative. C/B. citrina has larger spores and amyloid asci.
William Slosse, 09-02-2016 21:43
William Slosse
Re : Bisporella citrina??

Thx for your reaction, Hans-Otto.


I'm new on this forum, but very pleased with this quick response.


I have still a fresh specimen in collection and I will check the reaction with Meltzer's reagens.


I found not a (good) key to convince me if it's citrina or sulfurina so I thought why not putting the question on this forum.


Nice to become some very interesting information from experts.

Hans-Otto Baral, 09-02-2016 21:54
Hans-Otto Baral
Re : Bisporella citrina??
You could also try to check the ascus base: citrina with croziers, claroflava without, but it is not easy.

Btw, it is better to use Lugol/IKI for testing ascus reactions.
http://invivoveritas.de/articles/iodine-reaction-in-ascomycetes-why-is-lugols-solution-superior-to-melzers-reagent/

best regards
Zotto
William Slosse, 09-02-2016 22:35
William Slosse
Re : Bisporella citrina??

The habitus of croziers is indeed for me something difficult to recognize.


I detected following structure while searching for asci etc. Can this be a crozier?

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Hans-Otto Baral, 09-02-2016 22:42
Hans-Otto Baral
Re : Bisporella citrina??
no, but on the left of your pic I see a bit unsharp that croziers are absent (asci are "simple-septate").
William Slosse, 09-02-2016 22:52
William Slosse
Re : Bisporella citrina??
Thx for all your info, Hans-Otto, very instructive for me!