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14-02-2008 07:57

Alain GARDIENNET Alain GARDIENNET

Bonjour, Je viens de mettre la main sur Volutell

14-02-2008 01:16

Patrice TANCHAUD

Depuis plusieurs années, nous observons cette pé

13-02-2008 17:46

Jacques BeckCeccaldi

1- commet expliquer que les spores du genre Peziza

10-02-2008 22:15

Alain GARDIENNET Alain GARDIENNET

Bonsoir, Après Lasiosphaeria stuppea trouvée s

10-02-2008 08:53

VASILEIOS KAOUNAS

spore of Pachyphloeus ligericus cf. under cistus

10-02-2008 08:52

VASILEIOS KAOUNAS

What is this ? Pachyphloeus ligericus cf. ?

09-02-2008 20:02

Alain GARDIENNET Alain GARDIENNET

Quelqu'un aurait-il la description de Guignardia m

09-02-2008 16:11

Alain GARDIENNET Alain GARDIENNET

Bonjour, Je vous dérange encore avec un asco su

09-02-2008 07:54

Alain GARDIENNET Alain GARDIENNET

Bonjour, J'ai remis la main sur une Gibberella.

08-02-2008 11:10

Michel RIMBAUD

Hauteur 0,5mm. Entouré de poils noirs 3,4x200µ Ã

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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