04-11-2025 09:07
Josep Torres
Hello.A suspected Hymenoscyphus sprouting on a thi
04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
28-10-2025 19:33
Nicolas Suberbielle
Bonjour à tous,Je voudrais votre avis sur cette r
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
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
Q = 7 - 7.4 ; N = 3
Me = 79 × 10.9 µm ; Qe = 7.2
fruitbodies-1-0001.JPG
fruitbodies-2-0001.jpg
microplate-1-0001.JPG
Hans-Otto Baral,
08-11-2024 18:14
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
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.