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25-05-2024 18:29

Malcolm  Greaves Malcolm Greaves

I found a group of Mitrula gracilis? on wet debris

25-05-2024 16:40

Sylvie Le Goff

Bonjourj'aimerais confirmation ou pas pour ce peti

25-05-2024 16:54

Sylvie Le Goff

Bonjour j'aimerais confirmation ou infirmation de

25-05-2024 16:54

Sylvie Le Goff

Bonjour j'aimerais confirmation ou infirmation de

22-05-2024 23:39

Marc Detollenaere Marc Detollenaere

Dear Forum,On debarked Fagus I found some small wh

21-05-2024 17:48

Karl Soler Kinnerbäck

Hi all,Could this be Venturioscypha or Venturiocis

21-05-2024 11:33

Nihad Omerovic

Hello,found on dead, dry, attached (and fallen) tw

07-11-2018 08:34

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Hello, could someone send this publication to me

21-05-2024 09:15

Pierre Repellin

Bonjour à tous,L'ouvrage de Björn Wergen: Handbo

21-05-2024 16:12

Thomas Flammer

Substrate: not quite sure, on pluvious stem of a h

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Dermateaceae from Rubus chamaemorus
Nina Filippova, 14-07-2014 16:34
This quite distinctive species commonly met on stems of Rubus chamaemorus submerged in Sphagnum. It grows nearby with some Mollisia sp., but it has this distinct encrusted excipulum and dentate edge, pale vacuoles in paraphyses, so may be another genus?

Apothecia sessile or with very short stem, up to 700 mk broad, outer surface dark brown to black, rough, hymenium gray, edge shortly dentate from clumped hairs; when young dentate edge more pronounced; single or in groups on stems submerged in Sphagnum.

Excipulum from round brown cells about 10 mk, outer cells with rough brown incrustation; edge with clavate hairs sitting on 3-5 round cells, total length up to 40 mk, with the same brown incrustation; asci with crozier, with euamyloid ring, 40-47 x 4.4-5.4 mk (n=10); paraphyses narrow-lanceolate, with not contrast vacuoles, 45-50 x 3-3.5 mk; spores fusoid, heteropolar, without oils, 6.8 (5.9-7.9) x 1.7 (1.5-1.9) mk (n=20).

Date of collection: 14.07.2014, Coordinate: N60,891507° E68,673145°
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Nicolas VAN VOOREN, 14-07-2014 17:07
Nicolas VAN VOOREN
Re : Dermateaceae from Rubus chamaemorus
Maybe the genus Pirottaea...