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16-02-2026 21:25

Pyreno in the bark of Lonicera xylosteum
Andreas Millinger Andreas Millinger

Good evening,failed to find an idea for this fungu

16-02-2026 18:34

Exosporium tiliae
Thierry Blondelle Thierry Blondelle

Bonjour,La micro de cet anamorphe de Hercospora su

08-12-2025 17:37

possibly related to Melanomma - on Abies
Lothar Krieglsteiner Lothar Krieglsteiner

20.6.25, on branch of Abies infected and thickened

16-02-2026 17:14

Cucurbidothis specimens?
Joanne Taylor

Last week we published the following paper where w

16-02-2026 16:53

recherche de publi
Isabelle Charissou

Bonjour, quelqu'un pourrait-il me transmettre un

16-02-2026 00:05

Literature request
Maren Kamke Maren Kamke

Good evening, I am looking for the following pape

16-02-2026 11:53

Sarcoscypha coccinea or austriaca?
Joeri Belis

between leaf litter on twig in young salix growth.

14-02-2026 22:45

Vexillomyces/Claussenomyces
Tomaz Vucko Tomaz Vucko

Hy!I would ask for some help determing this specie

13-02-2026 03:30

Unknown near Pseudohalonectria
Tomaz Vucko Tomaz Vucko

Hello! I found these immersed perithecia on a stic

15-02-2026 20:28

Mollisia
éric ROMERO éric ROMERO

Bonjour tous, Un Mollisia qui me pose problème..

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Nectriella sp. on Impatiens
Björn Wergen, 24-05-2013 12:23
Björn WergenHi friends,

I have found another Nectriella, which is near N. dakotensis, but with verrucose, bigger spores and longer setae. It has very small 0,1 mm broad, orange yellow fruitbodies with a distinct whitish ostiolus and surrounding, redbrown setae. I have tried to find this out with Rossman's Family of Bionectriaceae, but stucked between N. alpina and N. halonata, which do not fit this finding.

Short description:
Sp. 11-16x2,5-4µm, slightly verrucose, 1septate. Asci 45-55x6-7µm. setae 60-90x5-6µm. On Impatiens glandulifera.

Any other ideas?

regards,
björn

edit: I think this IS N. halonata. Probably a small spored form?
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Christian Lechat, 24-05-2013 12:33
Christian Lechat
Re : Nectriella sp. on Impatiens
Hi, Björn,
did you test KOH and lactic acid?

Regards,
Christian
Björn Wergen, 24-05-2013 12:37
Björn Wergen
Re : Nectriella sp. on Impatiens
Hi Christian. What does KOH do? I will test it directly.
Björn Wergen, 24-05-2013 12:54
Björn Wergen
Re : Nectriella sp. on Impatiens
I have tested it, but there was no reaction either with KOH nor with lactic acid.
Christian Lechat, 24-05-2013 16:39
Christian Lechat
Re : Nectriella sp. on Impatiens
I think your fungus is not N. halonata, I saw this species, it is not like this. Could you show an image of the ascomatal wall in vertical section?

Christian
Björn Wergen, 24-05-2013 17:39
Björn Wergen
Re : Nectriella sp. on Impatiens
Hmmm the fruitbodies are very soft and impossible for me to cut. What can I do? Just drying?
Christian Lechat, 24-05-2013 18:42
Christian Lechat
Re : Nectriella sp. on Impatiens
you can send me your specimen (dried), I will study it gladly, because your collection is very interesting.

Regards,
Christian
Björn Wergen, 24-05-2013 19:04
Björn Wergen
Re : Nectriella sp. on Impatiens
Hi Christian,

of course I can send you the collection.

regards,
björn