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23-05-2018 19:32

Enrique Rubio Enrique Rubio

Hi againMinute semi-inmersed pseudothecia (up to 2

11-06-2018 17:52

Paul Cannon

Here is a very distinctive disco on twigs of Pinus

10-06-2018 23:45

Bometon Javier Bometon Javier

En tallo herbaceo indeterminado Esporas (12) 13-2

16-06-2015 20:07

Enrique Rubio Enrique Rubio

Have you some idea about this fungus growing on le

10-06-2018 21:24

Riet van Oosten Riet van Oosten

Hello, Found 10-06-2018 on Typha, The Netherlands

10-06-2018 21:49

François Bartholomeeusen

Dear forum members, I suspect it is a Pyrenopeziz

10-06-2018 18:28

Blasco Rafael Blasco Rafael

Hola, esta horbilia estaba sobre madera de Salix m

10-06-2018 12:12

Castillo Joseba Castillo Joseba

Sobre un tronca caido de FagusA ver que os pareceS

08-06-2018 18:33

Enrique Rubio Enrique Rubio

Hi to everyoneThis enigmatic diaporthale makes sub

08-06-2018 13:25

Blasco Rafael Blasco Rafael

Hola, necesitaria su confirmacion para esta muestr

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Leptosphaeria on Tamus communis
Enrique Rubio, 23-05-2018 19:32
Enrique RubioHi again
Minute semi-inmersed pseudothecia (up to 200 microns in diam) with only the obtuse papilla visble, on stems of Tamus communis (Dioscorea c.).
The golden light ascospores are (1-)3-septate, the second cell slightly enlarged, with obscure apical conical appendages. 
It seems to match with the plate 0506 in last Bjorn Bwergen's book on Pyrenomyecetes, under the name Leptosphaeria scitula on Chelidonium. But the spore (and asci) size is larger than Holm and Shoemaker's descriptions.
What do you think?
Thanks again for help me.
  • message #53559
  • message #53559
  • message #53559
Mlcoch Patrik, 11-06-2018 21:00
Mlcoch Patrik
Re : Leptosphaeria on Tamus communis
I thing, that this can be Paraleptosphaeria nitschkei, or so something from this agregation. I have collection this species from the Papaver orientale, but most common are collections from Asteraceae. It would be very interesting this your collection sequencing, i should interested in this collection, because I interested in the genus Leptosphaeria and I this genus want to process in detail. 
On Tamus was found only Leptosphaeria tami, but it has shorter hyaline spore (17 x 4,5 um) and 4-septate. P. nitschkei has spore 3-5 septate and 28-36 x 3-4 um large. Your collection has characteristics of morfology of spore for P. nitchkei.
Enrique Rubio, 12-06-2018 13:25
Enrique Rubio
Re : Leptosphaeria on Tamus communis
Hi Patrik
Thank you for your help.
If you want I send you a part of my collection, please, give me your postal address.
Regards
Enrique