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27-02-2026 11:21

Yannick Mourgues Yannick Mourgues

Hi to all. Here is a specie that can may be relat

18-03-2026 13:09

Khomenko Igor Khomenko Igor

I recently examined Celtis occidentalis branches

18-03-2026 18:42

Gonzalez Garcia Marta

I have collected some lyre-shaped apothecia on the

18-03-2026 17:22

Katarina Pastircakova

Hi there,I'm looking for the following literature:

27-11-2025 15:41

Thomas Læssøe

Spores brownish, typically 4-celled; 26.8 x 2.4;

18-03-2026 11:52

Thomas Læssøe

https://svampe.databasen.org/observations/10493688

11-03-2026 17:36

Michel Hairaud Michel Hairaud

Bonjour, Je cherche des indices  pour cette réc

17-03-2026 10:40

Martine  Vandeplanque Martine Vandeplanque

Bonjour à tous.Chaque année en mars ou avril, il

17-03-2026 19:41

Bernard CLESSE Bernard CLESSE

Bonsoir à toutes et tous,Pourriez-vous m'aider à

12-03-2026 19:44

Enrique Rubio Enrique Rubio

Hi to everybody.Can you give me any suggestions ab

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Orbilia with 'hyphomycete'
Chris Yeates, 05-08-2013 19:28
Chris YeatesBonsoir tous
yesterday I collected a damp rotten decorticated branch (probably Taxus); there are several species of fungi on it; one is an Orbilia which I feel reasonably confident is O. eucalypti - I have collected this species in this wood before, though on a different substrate (see: http://www.ascofrance.com/search_forum/21451 )
Of interest was a conidium of a sort one often associates with aquatic, Ingoldian, fungi - we have had a lot of rain recently and I have noticed conidia normally though of as primarily aquatic in wet terrestrial habitats). The conidium a strong resemblance to Tripospermum camelopardus, although it has an extra "neck" - because of the three-dimensional nature of the condium I have tried (not entirely successfully I fear)? to use stacking software to give an idea of its size and point of attachment (it is the upper left "neck" in the attached image). If it is a Tripospermum, then there clearly is no link between the two fungi (that genus is anamorphic Capnodiaceae); but I may be wrong in assigning it there. I know Zotto is interested in putative anamorphs of Orbilia (some of which do have potentially aquatic anamorphs). Others may be interested too, so I post this find here.

Cordialement
Chris

  • message #24690
  • message #24690
  • message #24690
  • message #24690
Hans-Otto Baral, 05-08-2013 21:52
Hans-Otto Baral
Re : Orbilia with 'hyphomycete'
Hi Chris

the conidium does not look orbiliaceous.  The kind of branching is unusual. The filament to the right is the conidiophore? Dies it have a faint colour or is it from Congo red?

Yes, this is the sublobose-spored variant of eucalypti, certainly geneticaly not different because sometimes also normal asci and spores are found in the same population.




Zotto
Chris Yeates, 05-08-2013 22:34
Chris Yeates
Re : Orbilia with 'hyphomycete'
Thanks for the confirmation Zotto; with regard to the conidium, no, all the "arms" are part of it (and no stain, must be an artefact - it was difficult to render this in 2 dimensions); I have since checked Prof. Ingold's protologue for Tripospermum camelopardus (see attached); this conidium quite strongly resembles his undescribed T. sp. As you can see the original point of attachment is the shorter of the "giraffe's" two legs.
So certainly an unconnected stray . . . .
best wishes
Chris
Hans-Otto Baral, 05-08-2013 22:37
Hans-Otto Baral
Re : Orbilia with 'hyphomycete'
Yes, you are certainly right!

Zotto
Esquivel-Rios Eduardo, 05-08-2013 23:20
Re : Orbilia with 'hyphomycete'
"Tripospermun myrti (Lind). Hughes. 1951. Mycol. pap. 46:17-18
Conidia with stalk cell 6-10 x 4- 7 mu, arms up t0 30 mu long, 4-8 thick at the base,tapering 1-2 mu, 1 - 4 septate, often constricted at the septa; one of the arms in this species usually lies parallel to the stalk cell"