Accès membres

Mot de passe perdu? S'inscrire

03-07-2025 18:40

Castillo Joseba Castillo Joseba

me mandas el material seco de Galicia (España) re

03-07-2025 20:08

Francois Guay Francois Guay

I found this interesting yellowish asco growing on

28-06-2025 16:00

Josep Torres Josep Torres

Hello.A tiny fungus shaped like globose black grai

20-06-2025 08:33

Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

01-07-2025 23:37

Josep Torres Josep Torres

Hello.A Pleosporal symbiotic organism located and

02-07-2025 17:26

Yanick BOULANGER

BonjourRécolté sur une brindille au fond d'un fo

02-07-2025 18:45

Elisabeth Stöckli

Bonsoir,Sur feuilles d'Osmunda regalis (Saulaie),

02-07-2025 09:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Hello, bonjour.Here is the paper I'm searching for

30-06-2025 16:56

Lydia Koelmans

Please can anyone tell me the species name of the

30-06-2025 12:09

Edvin Johannesen Edvin Johannesen

This tiny, rather "rough" erumpent asco was found

« < 1 2 3 4 5 > »
Bionectriaceae (Ijuhya?) from Kenya
Ibai Olariaga Ibarguren, 11-10-2013 23:53

Hi, I found in the Uppsala herbarium a collection from Kenya, with stems of Lobelia (or Euphorbiaceae ?), made by Owe Eriksson in 1968. It contains at least two apparently interesting fungi, so I thought to post it here.

The first fungus is a nectriod one, a Bionectriaceae I believe. It has densely gregarious groups of perithecia, superficial, flattened (probably because of being dry), with a little papilla, up to 0.5 mm in diam, orange-brown, unchanged in KOH, covered by hairs, except for in the apex, up to 130 µm. Perithecial wall 80 µm thick, composed by an outer region composed by 3-5 layers of subglobose hyphae, and an inner region of flattened cells, ca 10-15 µm. Asci clavate, with an apical inconscpicuos ring. Ascospores 27-32 x 7.5-9 µm, hyaline, curved, 2-celled, striate.

It reminds of the photos of Ijuhya antillana in Ascofrance. The perithecial wall structure, the presence of hairs and the spores seem to fit. I have used the Ijuhya key by Lechat & Courtecuisse (2010) and it keys out as I. chilensis, but I haven´t done more research. There are some whitish patches in the substrate that might be the anamorph, but I haven´t checked.

Any opinion? More data needed? Thanks in advance!

Cheers,

Ibai.
  • message #25431
  • message #25431
  • message #25431
  • message #25431
  • message #25431
  • message #25431
  • message #25431
  • message #25431
Christian Lechat, 12-10-2013 06:14
Christian Lechat
Re : Bionectriaceae (Ijuhya?) from Kenya
Hi Ibai,
your fungus is not the genus Ijuhya because of thickness of ascomatal wall, which is less 30 µm in this genus. Moreover, the outer region of your specimen has large and thin walled cells.
So, I think it is the genus Hydropisphaera which has cupulate ascomata when dry as on your photo.

I'm working on a monograph of the genus Hydropisphaera and it would be useful to me to see your specimen.  Could you please send it to me? Thanks.

Best regards,
Christian
Ibai Olariaga Ibarguren, 12-10-2013 16:59
Re : Bionectriaceae (Ijuhya?) from Kenya

Hi Christian,

Thank you for your quick and good answer. I am glad that you are interested in looking at the material. The material is in the Uppsala herbarium and I cannot send it freely, but I will email you privately to see what we can do.

Cheers, 

Ibai.
Christian Lechat, 26-01-2014 10:51
Christian Lechat
Re : Bionectriaceae (Ijuhya?) from Kenya
Dear Ibai,
I studied your fungus, it is an undescribed species of Hydropisphaera with ascomatal wall up to 140 µm thick!
Unfortunately, it is too old to be cultivated.
All the best,
Christian
  • message #27095
Ibai Olariaga Ibarguren, 27-01-2014 14:19
Re : Bionectriaceae (Ijuhya?) from Kenya

Dear Chrstian,

Thanks for studying the material, very interesting! A pity that it cannot be cultivated, but at least we know now that it exists. I will keep an eye in case more material shows up in Uppsala.

Cheers,

Ibai.