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09-07-2020 00:39

Valencia Lopez Francisco Javier

Hola a todosEncontré este curioso ascomycete a me

08-07-2020 19:01

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonjour.Je ne remets plus la main sur mon tiré-à

08-07-2020 20:29

Juuso Äikäs

These were growing on a dead grass stalk in a fore

08-07-2020 16:47

Chris Yeates Chris Yeates

Bonjour tous While searching for the downy mildew

08-07-2020 18:21

Castillo Joseba Castillo Joseba

me mandan el material seco recolectado en mdera si

08-07-2020 10:59

Joanne Taylor

Hi there,Does anyone have a copy of the following

07-07-2020 21:07

Lieve Deceuninck Lieve Deceuninck

Dear members of this forumCould this find be Cheil

08-07-2020 16:41

Thomas Læssøe

Suggestions on this one would be very welcomesee:

06-07-2020 17:11

Thomas Læssøe

see: https://svampe.databasen.org/observations/10

02-04-2007 01:16

Patrice TANCHAUD

Bonsoir, Si on prend "Nordic Macromycètes" (tom

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dark brown Otidea
Chris Yeates, 13-12-2019 16:20
Chris Yeates
Bonjour tous

this is an area I feel rather ignorant about, rarely encountering this genus. This very dark Otidea was growing at the edge of a large garden, on soil amongst Cupressus litter, almost certainly Cupressus x leylandii. I was struck by the dark colour and initially assumed it was a Peziza. However closer examination showed it to be an Otidea, although a rather cupulate one.

Paraphyses were curved at the apex, and contained tiny granules. I noticed that a number of asci contained shrunken aborted spores which had gone brown (see photo) although whether this is of taxonomic importance I don't know. The medulla contained dark encrustations and also scattered crystals (see image, in polarised light). The "warts" on the ectal margin were made up of more dark encrustations. The ascospores measured 13.2-14.8 x 6.6-7.6µm. All photographs are of living material in water.

Reference to the Persoonia monograph has led me to Otidea bufonia, my only concern is the shape of the spores, which seem to differ from others I have seen of that species. Any comments would be welcome.

Cordaliement

Chris
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Chris Yeates, 17-12-2019 01:05
Chris Yeates
Re : dark brown Otidea
Aucune idées?
François Bartholomeeusen, 17-12-2019 22:16
Re : dark brown Otidea
Hi Chris,

Compare with my finds, seems your right!

Greetings,

François


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Josep Torres, 18-12-2019 07:18
Josep Torres
Re : dark brown Otidea
Hola Chris, de acuerdo con la determinación, aunque yo le sigo llamando Otidea umbrina, al parecer hay diversidad de opiniones en cuanto a la denominación actual, segúm Mycobank debemos llamarla Otidea bufonia y según Index Fungorum Otidea cochleata, así que prefiero llamarla por su nombre anterior, es decir Otidea umbrina.
A esta la he estudiado hasta en cuatro ocasiones, dejo las medidas esporales de mis tres estudios anteriores, en mi último estudio aún tengo pendiente la medición de las esporas.´13,7;15,1 X 6,3;7,2, 14,4;15,2 x 6,2;6,6 y 15;16,8 X 6,6;8 micras.
Saludos cordiales.

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