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26-03-2024 17:14

Juuso Äikäs

These little black ascos were growing on a dead, d

29-03-2024 09:21

Michel Hairaud Michel Hairaud

Bonjour, Je recherche la description du genre Mac

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Alex Akulov Alex Akulov

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27-03-2024 22:53

Charles Aron Charles Aron

Hi All,Recently I came across these minute, setose

25-03-2024 13:41

B Shelbourne B Shelbourne

• Hyaloscyphaceae (no VBs), Hyaloscypha: Macro a

25-03-2024 21:27

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, March 2024

26-03-2024 14:37

DAVID MARCOS DAVID MARCOS

Spores (telles qu'elles apparaissent à l'intérie

24-03-2024 08:27

Thierry Blondelle Thierry Blondelle

HiOn Hedera helix fallen branchEcological habitat:

26-03-2024 11:06

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25-03-2024 14:08

Ursula Kozik

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Orbilia cf. luteorubella
Zuzana Sochorová (Egertová), 14-08-2022 15:50
Zuzana Sochorová (Egertová)Hello,
this Orbilia grew on a strongly rotten branch (probably Alnus) in a place which is usually submerged by standing water. Microscopic characters of the teleomorph fit the Orbilia luteorubella-O. rosea group, colour of apothecia and the ecology fit better O. luteorubella.
However, there is a problematic anamorph.

Ascospores 7.9-9.8 × 1.4- 1.8 µm, Q = 4.8- 7
Me = 8.7 × 1.6 µm; Qe = 5.7
SB subulate, one in each spore, 2.4-4.4 × 0.6-0.8 µm, usually thickest in the lowest part.


Asci 36 - 49 × 4-4.3 µm, 8-spored, upper spores oriented normally, lower spores inverted, apex truncate, base L. or T-shaped
SB subulate, one in each spore, 2.4-4.4 × 0.6-0.8 µm, usually thickest in the lowest part.


Paraphyses capitate, apical cell 20-23 × 2.4-3.5 µm.


Ectal excipulum composed of globose, angular or pyriform cells, individual cells
8-19 × (5) 6.9 - 14 µm
Q = (1.1) 1.2 - 2.2 (3.8) ; N = 16
Me = 15 × 9.2 µm ; Qe = 1.7


Conidia hyaline, straight, 1- to 3-septate, 20-35 × 7-9.5 µm. The anamorph was found on several places among the apothecia. It doesn´t fit neither luteorubella, nor rosea. Is it possible the anamorph doesn´t belong to the apothecia, but another species/genus...?
Zuzana

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Zuzana Sochorová (Egertová), 14-08-2022 15:51
Zuzana Sochorová (Egertová)
Re : Orbilia cf. luteorubella
Spores
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Zuzana Sochorová (Egertová), 14-08-2022 15:53
Zuzana Sochorová (Egertová)
Re : Orbilia cf. luteorubella
more photos
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Zuzana Sochorová (Egertová), 14-08-2022 15:55
Zuzana Sochorová (Egertová)
Re : Orbilia cf. luteorubella
anamorph
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Hans-Otto Baral, 14-08-2022 16:57
Hans-Otto Baral
Re : Orbilia cf. luteorubella
Hi Zuzana

I checked your first photo with automatic white balance and think the colour is orange-rose which points to luteorubella too.

The anamorph is not orbiliaceous since no phialidic conidiogenesis is known in Orbiliomycetes.

Zotto
Zuzana Sochorová (Egertová), 14-08-2022 17:26
Zuzana Sochorová (Egertová)
Re : Orbilia cf. luteorubella
Hi Zotto,
thank you very much!
Zuzana