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21-01-2020 21:24

Sven Heinz Sven Heinz

Hello, what kind of mushroom is this? It grows on

20-01-2020 18:55

Andgelo Mombert

Bonsoir, Un petit discomycète vert noirâtre mes

20-01-2020 18:35

Enrique Rubio Enrique Rubio

Could someone please give me a copy of the followi

20-01-2020 18:50

Stefan Blaser

Hello everybody, Any help on this collection is v

20-01-2020 21:52

Bometon Javier Bometon Javier

Hola a todos/asApotecios de 0,3 a 0,7 cmEsporas el

20-01-2020 18:19

Valencia Lopez Francisco Javier

Hola a todos/asTengo estas Pseudombrophila sp, rec

20-01-2020 14:52

Josep Torres Josep Torres

Hola.Unas imágenes del 21 de Mayo de 2018, de un

20-01-2020 07:30

Django Grootmyers Django Grootmyers

Growing on a dead, shrivelled portion of a Phlebia

15-01-2020 00:11

William Slosse William Slosse

Hallo Forum,I recently found a curious ascomycetes

19-01-2020 20:16

Robin Isaksson

Spores multiguttulate,one cell and 22-26x 4,5-6 u

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Durella conmutata vs. Durella compressa
Enrique Rubio, 03-02-2010 19:03
Enrique RubioDear friends:
What's the correct name for this Durella species growing on Ulex europaeus: D. commutata or D. compressa?. I can see in Zotto's CD and older key with D. commutata and a newest key with D. compressa.
Many thanks
  • message #10222
Enrique Rubio, 03-02-2010 19:04
Enrique Rubio
Re:Durella conmutata vs. Durella compressa
Micro
  • message #10223
Enrique Rubio, 03-02-2010 19:04
Enrique Rubio
Re:Durella conmutata vs. Durella compressa
Macro
  • message #10224
Perz Piotr, 03-02-2010 19:19
Re:Durella conmutata vs. Durella compressa
Dear Enrique,

the ascospores does have a high lipid content. Is the foto made in H2O ?

Piotr
Enrique Rubio, 03-02-2010 19:49
Enrique Rubio
Re:Durella conmutata vs. Durella compressa
Yes! Only water, Piotr
Hans-Otto Baral, 03-02-2010 22:01
Hans-Otto Baral
Re:Durella conmutata vs. Durella compressa
Hi Enrique

The excipular texture is not at all that of a Durella. I think I know what you have: Phaeangella "semilichenia". The species name is a joke. Guy Marson knows this species since about the first time we met, and we finally called it so because drought-tolerant discos like this one like to grow in the habitats of lichens.

For a long time we had no genus for it, only we placed it in the Encoelioideae (but in my Helotiales-key it is still as "D." "semilichenia", as a Durella!). Later I detected that Phaeangella ulicis is very very similar. I even think that your specimen is Ph. ulicis, and perhaps all our finds also, which were mainly on Prunus spinosa, but also on Crataegus and Sorbus. The paraphyses vary between capitate (on Rosaceae) and uninflated (on Ulex). Yours are capitate....

You can test with KOH: a faint olivaceous-brownish sap should extrude into the medium.

Wonderful collection! I would like to note the collection data, please.

Zotto

Enrique Rubio, 04-02-2010 17:37
Enrique Rubio
Re:Durella conmutata vs. Durella compressa
Yes, Zotto. An clearly olivaceous sap extrude from the ascomata in KOH. Dennis says (British Ascomycetes) that the paraphyses have a content that become wine-red in KOH, but I can't see this reaction (only olivaceous as you say me). My collection fits well with your drawings of Phaeangella semilichenia. Have you studied holotypus of Ph. ulicis?
Data collection: Los Torollos (Asturias) Spain, 43º 21' 786 N , 005º 54' 952 W, 250 m, 30-I-2010, on Ulex europaeus branches, ERD-5054.
There is any lichens close to my ascomata!!
Do yo like my images at bigger resolution?
Enrique
Hans-Otto Baral, 04-02-2010 18:21
Hans-Otto Baral
Re:Durella conmutata vs. Durella compressa
So you mean there is no lichen around? That may be :-) But the fungus could be confused with a Buellia etc.

Yes, please send me your images. I was unaware of Dennis' statement, and no: I did not study the type.

In the Ulex find by Jean-Paul Priou I noted "KOH : deep honey-yellow to redbrown dissolved in medium (ionomidotic)".

Zotto
Enrique Rubio, 04-02-2010 19:23
Enrique Rubio
Re:Durella conmutata vs. Durella compressa
Yes. No lichen around the apothecia. Only Hysterium angustatum hysterothecia. There is any ionomidotic reaction on my collection and my find is clearly on Ulex branches.
Many thanks!
Enrique
Hans-Otto Baral, 06-02-2010 21:39
Hans-Otto Baral
Re:Durella conmutata vs. Durella compressa
Enrique, your idea was good. I must correct, my idea of Phaeangella is most probably erroneous. After Dennis the crimson colour is not a pigment dissloved in the medium but a colour change of the excipular cells. I have actually some collections from SW-USA which fit not too badly to Phaeangella. They have biguttulate spores similar as Ellis & Ellis depicts them in Phaeangella ulicis, and they have the excipular colour change. I noted: Paraphyses in KOH with lilac-violet exudate sheath. Purplish-brown exudate of paraph. and excipulum KOH-inert but turning more lilac-violet.

The present find came from Arizona, Grand Canyon, on xeric Quercus gambelii branch. Same species on Acer, Amelanchier, Populus tremuloides, and Ribes cereum.
  • message #10269