26-03-2026 15:31
Ã…ke Widgren
Hello,I found this one in October last year, on r
27-03-2026 15:23
Gernot FriebesHi,this Trichopezizella deviates from typical T. b
25-03-2026 10:35
Hulda Caroline HolteHello,I collected this species growing on a dead b
27-03-2026 15:08
Gernot FriebesHi,I'm looking for help with this coelomycete on C
27-03-2026 10:47
Ã…ge OterhalsI have tentatively identified this Stictis to S. f
24-03-2026 21:37
Elisabeth StöckliBonsoir,Sur bois (tronc) très pourri de conifère
25-03-2026 22:23
Marc Detollenaere
Dear Forum,On a debarked stem of Tilia, we found s
24-03-2026 15:44
Ã…ge OterhalsI hope someone can confirm the name of this collec
Ceuthospora cf. mahoniae
Riet van Oosten,
09-03-2019 18:40
Hello,
Found by Laurens van der Linde, on Berberis vulgaris
Could this be Ceuthospora mahoniae?
The size of the conidia doesn't quite fit, 13.6-16.4 x 2.3-2.4 µm
This species in Microfungi on Land Plants, page 162, under Mahonia (Oregon Grape) = family Berberidaceae.
Ellis & Ellis: "Conidiomata multiocular, black, with a central pore. Conidia hyaline, 10-14 x 1.5-2. On dead leaves, Mar.-Apr."
Greetings, Riet
Chris Yeates,
09-03-2019 19:28
Re : Ceuthospora mahoniae
Hello Riet
There are many problems with these "Coelomycetes" and it is often not easy to assign every collection to a reliable name.
One problem is that in the past form-species occurring on different host genera or families were often considered to be different species, even if morphology was not very different. How many "good" Ceuthospora spp, there are is therefore uncertain. What is needed is molecular work to sort out the actual different taxa, and then hopefully morphological characters to differentiate them for field workers will emerge.
I'm attaching the relevant page from W.B. Grove's "Stem & Leaf Fungi"; he described Ceuthospora mahoniae and this will have been where Ellis and Ellis got those conidial measurements from. In my experience Grove's measurements are fairly reliable. I would record this as Ceuthospora cf. mahoniae Grove.
Hope that helps a little bit
Chris
Extracted-page-291-from-1935-Stem-amp-LeafFungi-v1-0001.pdf
Riet van Oosten,
09-03-2019 20:05
Re : Ceuthospora mahoniae
Hello Chris,
Thank you for your help and explanation!Â
Thank you for your help and explanation!Â
Chris Yeates,
11-03-2019 19:03
Re : Ceuthospora mahoniae
Here is the original description from Journal of Botany vol. 56 (1918):
Riet van Oosten,
11-03-2019 21:44
Re : Ceuthospora mahoniae
Very nice Chris, thank you!