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14-10-2019 20:00

Michael Haldeman

This collection is from bark at the base of a dead

15-10-2019 05:23

Yulia Lytvynenko Yulia Lytvynenko

Dear friends.Looking for a copy of the following w

14-10-2019 16:02

Yulia Lytvynenko Yulia Lytvynenko

Dear friends.Looking for a copy of the following w

12-10-2019 22:16

Michael Haldeman

I found this fungus on the thallus of Ochrolechia

12-10-2019 22:06

Mirek Gryc

Hello all.A few days ago I found Peziza which I in

13-10-2019 14:31

Thorben Hülsewig

Hi there, I have here a Calycina sp. which I cann

13-10-2019 18:13

Riet van Oosten Riet van Oosten

Hello, On the culm of Phragmites australis (on th

13-10-2019 18:42

Ethan Crenson

Does anyone have: Liew, E.C.Y.; Aptroot, A.; Hyde

13-10-2019 16:46

Riet van Oosten Riet van Oosten

Hello, Found on the culm of Phragmites australis,

12-10-2019 16:25

Yulia Lytvynenko Yulia Lytvynenko

Dear friends.I have one sample of the Sporormia wi

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Microthyrium on Phragmites?
Jenny Seawright, 30-04-2015 21:52
Jenny SeawrightHello all, another query from dead Phragmites stems....

Small black pseudothecia, sections under the microscope making me wonder Microthyrium but with abundant conidia (c. 4 x 1 µm) and no spores.

I found mention of M. nigroannulatum on Phragmites but without spores I'm lost!

With regards
Jenny


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Spooren Marco, 01-05-2015 11:05
Spooren Marco
Re : Microthyrium on Phragmites?
Hello Jenny,

First of all:I doubt if it is Phragmites you have on the first picture, and second, ; I see a lot of conidia at your last picture ?

Best,
Marco
Jenny Seawright, 01-05-2015 19:50
Jenny Seawright
Re : Microthyrium on Phragmites?
Hello Marco,

Thank you for your reply - if not Phragmites I'm not sure what the substrate might have been but possibly a Poaceae stem among the Phragmites?

Conidia were very abundant in all sections I examined so presumably an anomorph?

With regards,
Jenny
Spooren Marco, 01-05-2015 20:39
Spooren Marco
Re : Microthyrium on Phragmites?
Hello Jenny,

  First, I think You have a Phoma or something like that;the texture of your pycnidium is angular, not striate.About the matrix, I do not think it is a Phragmites because of the obvious epidermis on your picture.Is it wooden?

Best,
Marco
Jenny Seawright, 01-05-2015 21:04
Jenny Seawright
Re : Microthyrium on Phragmites?
Hello Marco,

No, definitely a stem, and it appears hollow on the inside - photograph below of the piece collected (top of image) with two sections of Phragmites below.

Sorry I've no better images of the pycnidia, they varied slightly in shape and some appeared to have a small central protuberance.

A bin job methinks!

With regards,
Jenny
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Chris Yeates, 01-05-2015 22:15
Chris Yeates
Re : Microthyrium on Phragmites?
Don't worry Jenny!
Coelomycetes can be frustrating at the best of times and those on Poaceae are among the worst ;-)
best wishes
Chris
Jenny Seawright, 01-05-2015 22:32
Jenny Seawright
Re : Microthyrium on Phragmites?
Thanks Chris - I'm building up a substantial collection of bin jobs!
Jenny