Accès membres

Mot de passe perdu? S'inscrire

27-04-2026 09:59

Pauline. Penna

Bonjour Can anyone advise me on these pycnidia fo

26-04-2026 21:08

William Slosse William Slosse

Several species of Ramularia occur on Rumex that I

22-04-2026 20:54

Enrique Rubio Enrique Rubio

Hi to everybody.This Pyrenopeziza grew in moist le

25-04-2026 11:34

Louis DENY

Bonjour forumdans la clé de Zotto, L. pudicellum

24-04-2026 03:16

David Chapados David Chapados

Found while looking at something else from wood in

22-04-2026 01:06

Richard VALERI Richard VALERI

Bonjour à tous.Je vous présente cette Nectria s.

22-04-2026 20:17

Marian Jagers Marian Jagers

Is anyone familiar with the Hyphomycetes genus Pse

23-04-2026 06:46

François Freléchoux François Freléchoux

Bonjour, Voici la description d'un minuscule asco

21-04-2026 22:14

Margot en Geert Vullings

This cup fungus was found on April 10, 2026, on lo

22-04-2026 19:12

Louis DENY

Bonjour forum.Trouvé à Belfort, est de la France

« < 1 2 3 4 5 > »
A Helvella with very small dimensions and in an unusual biotope
François Bartholomeeusen, 03-12-2017 11:53

In the middle of an alder swamp forest, in Belgium, is a dike that the last six months has been inundated by the high water level.
Ascomata was found in November, at the base of a mossy, dead poplar (populus) seemingly growing on the bark.


Apothecium: 14 x 15 mm, saddle-shaped, selliform, grey-green, the brim is not attached to the stipe except one attachment of 0.5 mm wide;
Stalk: dirty yellow, 27 mm long, at the top 6 mm and 4 mm wide at the base, the whole length ribbed, the ribs run 2 mm further on the apothecium;
Spores: elliptical, 15,23-19,43 x 10,36-12,97 µm, Q = 1.53, 1 large drop and several small ones,
Asci: 194,53-261,53 x 16.77-22,17 µm; cylindrical, IKI-;
Paraphyse: septated, filiform, branched and 5 µm wide with up to 8 µm swollen top
Ectal exipulum: textura globulosa-subglobulosa length > 50 µm
Medular exipulum: textura intricate

Could this be Hevella lacunose var. sulcata or is it a H. lacunose that suffered from the wet weather and environmental conditions? Thanks for your help!

Greetings,
François Bartholomeeusen

  • message #51453
  • message #51453
  • message #51453
  • message #51453
  • message #51453
Nicolas Schwab, 03-12-2017 18:01
Re : A Helvella with very small dimensions and in an unusual biotope
Maybe Helvella phlebophora ?
François Bartholomeeusen, 04-12-2017 17:31
Re : A Helvella with very small dimensions and in an unusual biotope
Hi Nicolas,

Thanks for your good suggestion. I have read the description of H. phlebophora in Ascomycete.org and in Coolia 27 (1) but I still have my doubts. The ribs of the stalk continue on the bottom of the cap but they become very soon furrowed. My spore sizes are also slightly larger.

Greetings,

François