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13-10-2025 19:05

Louis DENY

Bonjour forumSur tronc décortiqué de feuillu x,

17-02-2013 21:11

Peter Welt Peter Welt

Jamoni, P.G. 1998. Un nuovo discomicete coprofilo

11-10-2025 20:27

Marcel Heyligen Marcel Heyligen

Found on a barked branch, 14 mm in diameter, of Ro

11-10-2025 14:20

Jean-Luc Ranger

bonjour à tous, Je ne vois pas comment l'on peut

09-10-2025 22:14

S. Rebecca

We just had the Bavarian Mycology Conference in Au

10-10-2025 00:49

Ethan Crenson

Hello all, This was found last weekend on a hardw

06-10-2025 15:57

David Chapados David Chapados

Hi, Could anyone help me with this Lophiostoma? 

04-10-2025 02:13

Francois Guay Francois Guay

Hi everyone,   I found this Hymenoscyphus growi

03-10-2025 22:17

Francois Guay Francois Guay

Hi everyone,   I found this white, star-shaped

03-10-2025 22:03

Francois Guay Francois Guay

Hi everyone, I found this weird asco growing on wo

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Gonatobotrys simplex
Joop van der Lee, 12-11-2014 19:55
Joop van der Lee

Found on cow dung.
It looks as if it developes two kinds op conidia's circular and ovel shaped on two places of the stem.
Circular conidia's are covered with wrats and the oval conidia's are not.


Stem: hyaline; 420-450x3-3.5um; septated, with two conidia origins; distance between origins 13-14 um; stem can be branched.
Oval conidia's: 7-8x2.5-3.5 um
Circular conidia's: 6-7 um in diameter. 

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Chris Yeates, 12-11-2014 20:50
Chris Yeates
Re : Phycomycete?
Hello Joop
the 'hyphomycete' with the elongate conidia looks very like Gonatobotrys simplex (anamorphic Melanospora damnosa (Sacc.) Lindau), a species which is often found associated with other fungi. Your photo's show these conidia both on the apical and the intercalary swellings.
The globose conidia I don't know about - are you absolutely sure only one fungus species is involved here? Might these globose conidia be "strays".
cordialement
Chris
Joop van der Lee, 13-11-2014 08:37
Joop van der Lee
Re : Phycomycete?

Hello Chris,


You probably may be right that we do have two different species, one with elongated codidia's and one with globose conidia's.
The stem with elongated conidia's does not have an intercalary swelling underneath the apical one, and the is branched. 
The stem with globose conidia's is not branched, but the photo's also show elongated originating from the intercalary swelling.


On the other hand the last photo gives the impression that the elongated conidia's are attached to the bulbous thickening of the stem.
The photo of the species on dung, although not good in focus, clearly shows globose conidia's on top of the stem and a bunch of conidia's beneath the top not positively identified as being elongated or globose.


I will have a look for more species hopefully solving the identification problem.


 


Joop

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Chris Yeates, 13-11-2014 12:08
Chris Yeates
Re : Phycomycete?
I am pretty certain that Gonatobotrys simplex is definitely there, or something extremely similar . . .
Chris
Joop van der Lee, 13-11-2014 19:58
Joop van der Lee
Re : Phycomycete?
Thanks Chris