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28-10-2025 19:33

Nicolas Suberbielle Nicolas Suberbielle

Bonjour à tous,Je voudrais votre avis sur cette r

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Ethan Crenson

Hi all,  I would like an opinion on whether this

29-10-2025 19:02

Castillo Joseba Castillo Joseba

De la pasada semana en rama posiblemente de hayaPi

25-11-2016 13:54

Stephen Martin Mifsud Stephen Martin Mifsud

Hi, I found numerous seeds of Washingtonia robusta

28-10-2025 22:22

Bernard Declercq Bernard Declercq

Hello.I'm searching for the following paper:Punith

27-10-2025 19:51

Peter Welt Peter Welt

Who has this article? Doveri, F. 2007. Sporormiel

28-10-2025 15:37

Carl Farmer

I'd be grateful for any suggestions for this strik

28-10-2025 11:29

Tanja Böhning Tanja Böhning

Hello, I found this very small (ca 0,5mm) yellow

27-10-2025 00:34

Francois Guay Francois Guay

I found this strange species in Québec,Canada, gr

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Michel Hairaud Michel Hairaud

Bonjour à tous, Avec Elisabeth Stöckli nous avo

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Small disco on leaf of Camellia japonica
Masanori Kutsuna, 14-07-2014 04:21
Hello everyone,

I found small disco on fallen leaves of Camellia japonica in Japan.


Up to 1 mm., short stalk, disc whitish (almost black when dry), outer surface brown to blackish towards the base, with sparse marginal hairs.
Asci 8 spored, I-, 105-140 x 5-6.
Paraphyses filiform, 1-1.5 in diam., sometimes branched at the tips.
Ascospore hyaline, with 2 (or -4) drops at ends, 11.4-14.2 x 2.6-3.2.
Excipulum of t. angularis, brownish cell walls, 3-8 microm. in diameter.
Marginal hairs arising from surface, almost hyaline, septate at base, 40-100 microm. long.


Any suggestion?


Kutsuna

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Hans-Otto Baral, 14-07-2014 10:16
Hans-Otto Baral
Re : Small disco on leaf of Camellia japonica
I think this is a Zoellneria (now Chaetomella will have priority according to the new rules).

There is only one anamorph species known according to my knowledge, but about 40 of the anamorph. I have no idea whether there is one described on Camellia. Th species are possibly host-specific. If you see blackish pyncidia with the same hairs nearby, then this should be the anamorph.

The hairs in Z. rosarum are intensely brown below and rather wide (about9-12 µm). How wide are your hairs?

Zotto
Masanori Kutsuna, 15-07-2014 01:28
Re : Small disco on leaf of Camellia japonica
Thank you, Zotto.

Hairs are less than 5 µm. I will look for pycnidia.

Regards.

Kutsuna