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Mot de passe perdu? S'inscrire

01-02-2013 18:42

Chris Yeates Chris Yeates

following on the heels of Enrique's request from t

01-02-2013 09:53

Gilles Corriol Gilles Corriol

Bonjour,Voici une autre récolte (GC12111805) pour

31-01-2013 19:45

Ibai Olariaga Ibarguren

Hi! Although it is a long time that I follow the

01-02-2013 16:58

Nina Filippova

Have identified three Hyaloscypha (i suppose it is

01-02-2013 16:31

Roland Labbé

Voici un Mollisia ventosa probable.Merci de nous a

01-02-2013 13:27

Garcia Susana

HolaEste ascomiceto lo he encontrado tambien sobre

31-01-2013 16:44

Garcia Susana

Tambien crecia sobre Rubus. En este caso sobre la

31-01-2013 19:55

Nina Filippova

This specimen seem fits well with description of P

31-01-2013 20:33

Salvador Tello

Hola.Este ascomiceto crece en conteza de Arbutus u

31-01-2013 12:43

Nina Filippova

Good day everyone, have collected some data to Go

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Chaetosphaerella ?
Ethan Crenson, 11-04-2019 06:53
From New York City last weekend, growing on an old Pyrenomycete (Eutypa, probably) I think this is Chaetosphaerella.  The small clusters of black fruiting bodies seem somewhat flattened at the apex.  They are seated in a dense brown subiculum.  I did not see any asci in any of my mounts.  Spores are 3-septate, brown with hyaline end cells and guttules in the two inner cells, usually curved. They measured 24-29 x 6-7µm.  I'm uncertain if I saw any conidia-- in the final photo there is a bowling-pin shaped brown cell that has two guttules. 

Could this be C. fusca or C. phaeostroma?  Does the difference come down to the conidia?

Thank you in advance for your help.
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Andrew N. Miller, 11-04-2019 14:45
Andrew N. Miller
Re : Chaetosphaerella ?
This is C. fusca.  The difference is whether or not the ascomata become collabent and the size of the ascospores (longer in C. phaeostroma).  


https://www-s.life.illinois.edu/pyrenos/records/show_by_page?page=24

Andy
Ethan Crenson, 11-04-2019 17:26
Re : Chaetosphaerella ?
Andy, thank you for your help!