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09-06-2025 22:28

Edmond POINTE Edmond POINTE

Bonjour,Apothecie pulvinée, blanche 0.4 x 1mm sur

09-06-2025 10:32

Elisabeth Stöckli

Bonjour,Trouvé sur une branche morte et décortiq

09-06-2025 12:50

Joaquin Martin

Hi,Last week I found this Hymenoscyphus on Rubus.S

09-06-2025 16:18

Sylvie Le Goff

BonjourPourrais je avoir votre avis sur cet ascome

09-06-2025 16:36

David Malloch David Malloch

As far as I know, this species has yet to be assig

08-06-2025 18:03

éric ROMERO éric ROMERO

Bonjour à tous, Une récolte alpestre discrète

07-06-2025 15:39

Edvin Johannesen Edvin Johannesen

A friend sent me a few Betula seeds with tiny blac

08-06-2025 14:55

Edvin Johannesen Edvin Johannesen

Ascomata only ca. 1 mm, erumpent on very thin Sali

06-06-2025 12:12

Hans-Otto Baral Hans-Otto Baral

Dear all I want to ask you if you have any recent

04-06-2025 15:10

Stefan Jakobsson

Hi forum, On a herbaceous stem, possibly Aegopodi

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Hyaloscypha herbarum on a cone of Pinus sylvestris
B Shelbourne, 18-11-2024 00:06
B Shelbourne• Macro and habitat seem hyaloscyphoid.
• Hairs and spores suggest Hyaloschypha (s.s.).
• Simple septa, rings, hairs, spores and substrate seem to suggest H. herbarum.

Habitat: On a decaying cone of Pinus sylvestris, mostly on the more sheltered inner parts, damp when found, on the floor with litter, under several large trees, on a sparsely wooded hillside, 197 m alt., Old Lodge nature reserve, Ashdown Forest, High Weald, southern England, early-November.

Apothecia: Tiny whitish discs, gregarious to 2-caespitose, sessile.

Macro: Diameter < ~0.5 mm, whitish-translucent, occasionally yellowish, initially more cupulate, then discoid-pulvinate and +/- appressed, margin more whitish, becoming flattened and often slightly uneven, with dense and short whitish hairs pointing outwards and some longer ones, disc distinctly convex in maturity, more translucent with the dark substrate showing in the centre, grainy appearance (hymenial cells).

Asci: Turgid ~(45) 50-60 x 7-8 um, simple septa, rings bb.

Spores: Cylindrical-allantoid to slightly clavate, usually approx. homopolar, ends rounded, tapering slightly, usually ~3-5 small LBs grouped at each pole, OCI 2-3, asymmetric or sometimes slightly to distinctly curved.

Free living spores in water:
(9.4) 10.3-13.1 (14.7) × (2.2) 2.6-3.0 (3.2) µm, Q = (3.5) 3.7 - 4.9 (5.3), N = 35, mean = 11.9 × 2.8 µm, Q mean = 4.2.

Paraphyses: Cylindrical, apex not noticeably inflated, width ~2-2.5 um.

Medullary: Some horizontal hyphae seen, otherwise ?

Ectal: Text. prismatica, at the base more round, slightly larger cells at the flanks and often branching before becoming hair-like, general dextrinoid reaction.

Marginal hairs: A few long and cylindrical, length ~70-100 x 2-3 um, apex rounded, otherwise short and tapering, ~25-40 x 5 um, at the apex ~1 um wide, conical to distinctly lageniform, with an apical inflation, blunt/obtuse, appearing smooth, possibly a slight amyloid reaction at apices.
  • message #80687
  • message #80687
  • message #80687
Hans-Otto Baral, 18-11-2024 11:47
Hans-Otto Baral
Re : Hyaloscypha herbarum on a cone of Pinus sylvestris
This could well be. But considering the wide host spectrum this species could be heterogeneous, considering also and the varation I see in my folder

There are two IT sequences in GB, one is by Huhtinen from Finland, so probably trustable.

What is the collection date?
B Shelbourne, 18-11-2024 19:36
B Shelbourne
Re : Hyaloscypha herbarum on a cone of Pinus sylvestris
08/11/2024

Thank you, I guess it's H. herbarum s.l. for now then. It's a shame there isnt enough genetic data to explore your hypothesis. As pointed out by Huhtinen in his monograph, there could also be some confusion with the quite similar H. (fuckelii var.) alniseda.

I thought the morphology seemed to fit with Huhtinen's concept, although there is no mention of the longer cylindrical hairs. The spore length and curvature seem quite variable, but the range of lengths given by Huhtinen is very broad and includes the longest spores in the genus.


I noticed the observation 1.X.2019 in your folder reports spores that are distinctly wider than Huhtinen's range, the asci are also larger, and many of the hairs look longer (possibly also noticeable in macro).


Huhtinen does also comment on the uncharacteristic and wide substrate range of H. herbarum, but suggests the cultures are morphologically similar and also grow faster. The precise substrate range doesn't seem clear but he only reports a single collection on Pinus, on bark, and otherwise they are all on angiosperms. Most records in the UK (with substrate data) report herbaceous material, but one says 'log, fallen, Pinus'.

Hans-Otto Baral, 18-11-2024 20:37
Hans-Otto Baral
Re : Hyaloscypha herbarum on a cone of Pinus sylvestris
Yes, this 2019 sample from Serbia on an oak log is too different, I also noticed. I changed it to cf. herbarum.

I suppose Hyaloscypha needs extensive molecular work coupled with morpho-docus to explore the genetic variation.

Sorry to repeat, for saving your files <i prefer an exact date.