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30-12-2024 15:53

Geopyxis ?
Jean-Luc Ranger

Je pense être dans ce genre mais sans certitude:

31-12-2024 15:39

Perithecila on algo-bacterial film
Jean-Paul Priou Jean-Paul Priou

Tout d'abord, meilleurs voeux de bonne santé à t

30-12-2024 23:57

Interesting orange asco on grimmia
Robin Isaksson Robin Isaksson

Hi! This one i have hard to find anything on. Does

01-01-2025 11:35

Again Mollisia scopiformis ?
Marc Detollenaere Marc Detollenaere

Dear Forum,On rotten wood of Fraxinus excelsior I

31-12-2024 15:12

Rosellinia britannica (?) sur Hedera helix
Bernard CLESSE Bernard CLESSE

Bonjour à toutes et à tous,Pourriez-vous me conf

01-01-2025 13:45

Enigmatic pyrenomycete
Enrique Rubio Enrique Rubio

THESE BLACKISH ASCOMATA WERE SEMI-IMMERSED IN A HA

15-12-2024 15:44

Lachnum sp.
Yannick Mourgues Yannick Mourgues

Here is a Lachnum found on dead branches of Erica

15-12-2024 14:34

Olla sp.
Yannick Mourgues Yannick Mourgues

HI. Found this very small cf. Olla specie on deco

15-12-2024 13:56

Orbilia sp.
Yannick Mourgues Yannick Mourgues

Hello. I would like to have your opinions on this

29-12-2024 23:32

Hymenoscyphus o Phaeohelotium?
ruiz Jose antonio

Hola a todos, de tamaño de unos 3 mm, algunas par

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Helotiales on cone again
Juuso Äikäs, 08-11-2024 17:36
Recently I posted here my finding of small white apos growing on a fallen Picea abies cone. I found these once again, but this time on a fallen Pinus sylvestris cone.

This species seems rather distinctive, and apparently at least locally common as well. So I decided to post this finding as well — this time with better data. Could this be identified even to family level?

The apos are sessile-substipitate and 0.2 - 0.4 mm wide. Asci 8-spored, IKI+(b), croziers present. Paraphyses narrowly cylindrical, with multiguttulate tips; similar cells on the margin. Extal excipulum with angular-globose cells and round guttules.

Spores with two large guttules and some smaller ones. Some spores appeared to have a gelatinous sheath. Measurements:

(15.1) 15.8 - 19.3 (20.4) × (3.4) 3.7 - 4.2 (4.4) µm
Q = (4) 4.3 - 4.8 (5.1) ; N = 10
Me = 17.9 × 4 µm ; Qe = 4.5

Asci:

69.1 - 90 × 9.8 - 12.4 µm
Q = 7 - 7.4 ; N = 3
Me = 79 × 10.9 µm ; Qe = 7.2

 
Hans-Otto Baral, 08-11-2024 18:14
Hans-Otto Baral
Re : Helotiales on cone again
This doesn't look the same as that on Picea if you mean that.

The apical ring is rather thick and the apex very conical, also the VBs in the paraphyses are restricted to the apex. H. epiphyllus would be multiguttulate in the cortical excipulum.

I am unsure for a genus, rather Calycina than Hymenoscyphus?
Juuso Äikäs, 08-11-2024 18:18
Re : Helotiales on cone again
I mean this one from a little earlier: 


The Hymenoscyphus was on a Pinus cone as well (on the core part).
Hans-Otto Baral, 08-11-2024 21:38
Hans-Otto Baral
Re : Helotiales on cone again
Ah o.k., now I remember. The paraphyses look like in Hymenosc. sparsus but that is a stipitate fungus on leaves, with typical Hym.-type of apical ring.