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19-09-2025 23:55

Jorge Hernanz

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Castillo Joseba Castillo Joseba

De ayer  recolectadas en Kk de vacunoHabia ejempl

17-09-2025 19:43

Philippe PELLICIER

Sur branche morte de Mélèze. Les ascospores sphÃ

18-09-2025 19:40

Sylvie Le Goff

BonjourPensez vous que le genre Pulvinula puisse c

18-09-2025 16:14

Bernard Declercq Bernard Declercq

Hello,I am looking for a copy of following paper:H

17-09-2025 16:14

Philippe PELLICIER

Apothécies enterrées, fermées au début puis s'

17-09-2025 10:50

Heather Merrylees

Hi there!I am hoping for any advice on the identif

11-09-2025 16:57

Jason Karakehian Jason Karakehian

Our revision of Marthamycetales (Leotiomycetes) is

16-09-2025 12:53

Philippe PELLICIER

Pézizes de 1-4 mm, brun grisâtres, sur les capsu

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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

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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