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13-02-2022 09:53

Mirek Gryc

Hello allDoes anyone help me identify this fungus?

11-02-2022 09:00

Dirk Gerstner

Hello all, I found this small yellow ascomycete o

07-02-2022 20:26

Mirek Gryc

HelloPyrthecia growing on the cut branches of the

02-02-2022 20:36

Jannes Boers

Hi all, Today I accidentally collected this speci

10-02-2022 16:46

Christine VALANCE

Bonjour,Trouvé sur branche coupée à terre. Il s

09-02-2022 13:44

Michel RIMBAUD

Bonjour,Je redécouvre dans mon ordinateur une gra

09-02-2022 20:26

Andgelo Mombert Andgelo Mombert

Bonsoir, Sur terre nue (!), près d'une souche de

06-02-2022 16:18

William Slosse William Slosse

Good afternoon everyone, Yesterday 05/02 I found

08-02-2022 22:45

Josep Torres Josep Torres

Hola.Un líquen fotografiado el pasado 25 de Enero

28-01-2022 20:59

Georges Greiff

Hi all, I found this tiny Hypocreales with mostly

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Leptosphaeria puzzle
Chris Yeates, 17-02-2014 16:57
Chris YeatesI have collected a Leptosphaeria on the dead stem-bases of last year's Tanacetum vulgare.The spores are almost all 3-septate, with a few developing a fourth, and a very few developing a fifth septum. Spore measurements are 19.1-23.9 x 5-5.7µm, in other words perfect for L. doliolum; however try as I might I cannot see evidence of the concentric ridge(s) on the pseudothecia which I would expect on that species, whether they are occuring below the stem cortex or on the bare stems. Photo's below: any suggestions welcome.
Chris
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