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24-01-2025 19:39

Margot en Geert Vullings

We found these orange dics on horse dung.We think

23-01-2025 17:09

Karen Poulsen

Hi all Could this be P. merdae? Found on differe

22-01-2025 15:56

Vasileios Kaounas Vasileios Kaounas

Found in sandy soil, in forest with Pinus halepens

23-01-2025 23:32

Yanick BOULANGER

BonsoirSur tige d'herbacé (non reconnue)Yanick

22-01-2025 18:14

Jean-Luc Ranger

Bonjour, J'ai trouvé sur une Helvella un feutrage

19-01-2025 18:36

William Slosse William Slosse

Good evening everyone, on 16-01-2025 I found this

22-01-2025 21:21

Yanick BOULANGER

BonsoirQuelqu'un pourrait il me dire ou chercher p

22-01-2025 23:49

Fernández Borisov Juan Paulino

Hello, I am from Spain and I am looking for this f

22-01-2025 13:56

Karl Soler Kinnerbäck

Hi! I find this most resembling Scutellinia subhir

17-01-2025 17:20

David Chapados David Chapados

Hi, Would it be possible to find the species of t

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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!