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07-02-2024 22:42

Björn Wergen Björn Wergen

Hi there,on attached twigs of Quercus sp, in Altho

07-02-2024 17:02

Thomas Læssøe

Any suggestions on this object? https://svampe.da

04-02-2024 15:25

Michel Hairaud Michel Hairaud

Bonjour, Voici une récolte sur bois de feuillu 

05-02-2024 14:54

Johan Boonefaes Johan Boonefaes

found on decomposed thick poplar trunk among Lopho

04-02-2024 18:51

éric ROMERO éric ROMERO

Bonjour, Je n'arrive pas à trancher entre Tricho

04-02-2024 14:10

Margot en Geert Vullings

On a fallen Alnus that still had some of the bark

04-02-2024 09:30

Robin Isaksson Robin Isaksson

Hi,This is a species i have collected severel time

02-02-2024 22:50

Karl Soler Kinnerbäck

Hi! This discomycete was found on the underside o

02-02-2024 10:35

Marc Detollenaere Marc Detollenaere

Hi to all,I need some help with the following coll

01-02-2024 23:24

Patrice TANCHAUD

Bonsoir, récolte sur branche de peuplier au sol.

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Orbilia angiosubvinosa
Björn Wergen, 07-02-2024 22:42
Björn WergenHi there,

on attached twigs of Quercus sp, in Althornberg (near Hornberg, BaWü), 03.02.24, we have found small orange discs of various sorts (Orbilia subclavuliformis, Calloria septoseptata). This here might be Orbilia angiosubvinosa, at least the keys led me to that direction (spores are shorter than given in Baral).


spores
(10.5) 10.6 - 12.9 (14.9) × (1.9) 1.94 - 2.2 µm; Q = (5) 5.1 - 6.7 (7) ; N = 16; Me = 12 × 2.1 µm ; Qe = 5.7.

sbs
3.7 - 5.07 (5.1) × 0.5 - 0.8 µm; Q = (5.4) 5.44 - 9.77 (9.8) ; N = 5; Me = 4.3 × 0.7 µm ; Qe = 6.8.

asci approx. (dead) 42 - 55 x 5 µm.


fk 340 - 390 µm diam.

anamorph dwayaangam-like, from natural substrate, middle part 10.0 - 10.5 µm broad.

Opinion?

regards
björn

  • message #78174
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  • message #78174
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Hans-Otto Baral, 08-02-2024 11:03
Hans-Otto Baral
Re : Orbilia angiosubvinosa
Hi Björn

interesting collection, but difficile matter!

Seems that glassy processes are absent (I guess it is exudate only). I have two folders, GP- and GP+.

What you could clarify: Are there crystalloid SCBs in the paraphyses or excipular cells?

Similar is also O. montigena which always lacked crystalloid SCBs and has Trinacrium conidia. Given that the Dwayaangam belong to the apothecia, this species is excluded.

Zotto

btw. If you want me to include your septoseptata in my MS feel free to send me your docu. The one with 3 septa got an old name: C. faberi Kunze in Rehm.
Björn Wergen, 08-02-2024 12:03
Björn Wergen
Re : Orbilia angiosubvinosa
Here are two photos of excipulum cells, with small crystalloid SCBs, but quite indistinct. The collection is not in a good condition btw
There is O. subclavuliformis on the same substrate, but on another twig, together with its trinacrium anamorph. I have seen the trinacrium anamorph also on the twig with the "O. angiosubvinosa" fruitbodies.
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Hans-Otto Baral, 08-02-2024 15:28
Hans-Otto Baral
Re : Orbilia angiosubvinosa
2-3 cells in your first pic are alvie and there might be some, but this is not certain to me. There are too few collections of this putative species and only one sequence.