12-03-2026 19:44
Enrique Rubio
Hi to everybody.Can you give me any suggestions ab
17-03-2026 10:09
François Freléchoux
Bonjour, Voici la description rapide d'un petit d
17-03-2026 10:40
Martine Vandeplanque
Bonjour à tous.Chaque année en mars ou avril, il
05-03-2026 10:07
Hulda Caroline HolteHello, I found and collected this species growing
12-03-2026 15:45
Åge OterhalsDear forum,I found this small discomycete on a ver
11-03-2026 17:36
Michel Hairaud
Bonjour, Je cherche des indices pour cette réc
14-03-2026 13:51
Thierry Blondelle
Hi everybody Under Quercus ilex, i hesitate to na
08-03-2026 14:05
Thierry Blondelle
Bonjour à tous,Sur 3 récoltes supposées de H. l
Rutstroemia sp. Nov '21
Nihad Omerovic,
11-11-2021 23:06
Looking for opinions on this Rutstroemia.
Collection date 16. Oct, on a twig, possibly of Alnus.
Spores measurement:
22.2 - 24.1 × 8.4 - 9.4 µm
Q = 2.4 - 2.8 ; N = 19
Me = 23.1 × 8.9 µm ; Qe = 2.6
The spores have reddish color.
Rutstroemia-sp-web-0001.jpg
Nihad Omerovic,
11-11-2021 23:10
Re : Rutstroemia sp. Nov '21
Spores
Nihad Omerovic,
11-11-2021 23:14
SAM-6224b-0001.jpg
Hans-Otto Baral,
12-11-2021 11:43
Re : Rutstroemia sp. Nov '21
This requires a closeup of the ectal excipulum. Is there a gelatinous layer?
You should compare R. alnobetulae.
Which altitude does it come?
Nihad Omerovic,
12-11-2021 13:12
Re : Rutstroemia sp. Nov '21
I am afraid I don't have much better photo of the excipulum.
I did compare it with R. alnobetulae but it didn't fit, as per R. Dougoud paper:
spores are wider (Q=2,6 while in R. alnobetulae Q=4), no mentioning of this spores reddish coloration and paraphyses are inamyloid.
Altitude is 500 m.
I did compare it with R. alnobetulae but it didn't fit, as per R. Dougoud paper:
spores are wider (Q=2,6 while in R. alnobetulae Q=4), no mentioning of this spores reddish coloration and paraphyses are inamyloid.
Altitude is 500 m.
Hans-Otto Baral,
12-11-2021 13:18
Re : Rutstroemia sp. Nov '21
Yes, the strange blue IKI reaction of the VBs in the paraphyses! And your spores are much too wide.
But I now see that R. alni (17-24 x 7-9) would come close to your data.
I think Rutstroemia is rather host specific, so the substrate should be clarified by wood anatomy.
Nihad Omerovic,
12-11-2021 13:31
Re : Rutstroemia sp. Nov '21
I have this cross section, I don't know if it is of any help.
Is the spore coloration of any significance, do you think?
I also collected What I IDed as R. alni the other day and compare it and it seemed different, excipulum, spores...
Is the spore coloration of any significance, do you think?
I also collected What I IDed as R. alni the other day and compare it and it seemed different, excipulum, spores...
