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03-02-2014 09:08

Joop van der Lee Joop van der Lee

Found on horse dung.Examining an unknown asco I fo

03-02-2014 10:10

Garcia Susana

Hi all:More or less immersed yellow apothecia grow

02-02-2014 20:12

Björn Wergen Björn Wergen

Hi friends,I have some Corylus twigs here with a d

01-02-2014 23:16

Maren Kamke Maren Kamke

Hi everybody,I need your help with this pyreno. Su

01-02-2014 20:40

Alex Akulov Alex Akulov

Dear FriendsCan you help me with identification of

01-02-2014 16:39

Yannick Mourgues Yannick Mourgues

Bon, les deux autres espèces trouvées sur Rosa n

31-01-2014 13:13

Yannick Mourgues Yannick Mourgues

Found on Rosa.Ostiole fendu.Spores with 6-7 septa,

01-02-2014 12:05

Yannick Mourgues Yannick Mourgues

Bonjour à tous.Il y a dans ce logiciel une foncti

31-01-2014 22:47

Joop van der Lee Joop van der Lee

Found on deer dung.Fruitbody and spores do look li

01-02-2014 13:15

Alex Akulov Alex Akulov

Dear FriendsAt first glance, sporulation of the fu

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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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