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24-06-2015 20:08

Possibly an anamorph?
Carmel Sammut

Found under olive tree - on dead olive leaf (could

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Hello,this fungus was found in a tropical lowland

23-06-2015 13:52

Hypocreale on Populus wood
Enrique Rubio Enrique Rubio

Hi to everybody On last spring my friend Mikel T

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23-06-2015 09:04

Orange discs on Rubus leaves
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23-06-2015 08:50

Greyish on Rubus leaves
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22-06-2015 17:16

Scutellinia on Picea cone
Malcolm Greaves Malcolm Greaves

This Scutellinia was found growing on a Picea cone

22-06-2015 14:06

Entomophthorales on gnats and flys
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Hi there, before 3 weeks ago i found on a tribe (

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Phaeosphaeriaceae
Garcia Susana, 04-07-2013 14:05
Hi to all:
Small ascomata on herbaceous stems.

I do not identify
Have you some idea


Thank you. regards
Susana

  • message #24259
  • message #24259
  • message #24259
Stoykov Dimitar, 04-07-2013 15:19
Stoykov Dimitar
Re : Phaeosphaeriaceae
You must check Phaeosphaeria (Leptosphaeria) monograph of Shoemaker (Can. J. Bot. 1984), or Shoem. & Babc.
There (1984) in the key for determination:

2b.  Spores with  sheath  ..............................................................................  8
.................  80.  Ascocarps  less than 200  mikroms wide.......  9
9tr.  Spores up to 8  mikom wide,  finally  echinulate: on Xeroplryllum ..............................  Leptosphaeria  xerophylli
911.  Spores 8-  11  pm wide,  smooth: on Agastache  ......................................  L. brightonensis.
8b.  Ascocarps more  than  200  mikrom wide   ........................................................  I0.

Try to identify the host plant ...

Björn Wergen, 04-07-2013 19:28
Björn Wergen
Re : Phaeosphaeriaceae
Hi Susana,

your species is most probably a member of Leptosphaeria. I think it is close to L. doliolum which has typically 3septated spores in pale grey-brown colours.

regards,
björn
Garcia Susana, 05-07-2013 08:28
Re : Phaeosphaeriaceae
hello

For now I can say it's Leptosphaeria sp. Thank you.
L. Doliolum would have the extremes of the spores acute. It could be L.conoidea?
Ascocarp Size: 270 x 220 um
Spores not seen to have ornamentation or sheath
The host, impossible to determine.
Can someone give me the monograph mentioned?


I would also like to get:
SHOEMAKER, R. A. (1984a) - Canadian and some extralimital Leptosphaeria species. Canada. J. Bot. 62: 2688-2729.


regards
Susana

Björn Wergen, 05-07-2013 09:56
Björn Wergen
Re : Phaeosphaeriaceae
I can send you the documents, no problem.

I am also interested in Shoemakers Leptosphaeria in Can. J. Bot. 62.

regards,
björn
Enrique Rubio, 05-07-2013 19:35
Enrique Rubio
Re : Phaeosphaeriaceae
And me too
Thank you
Enrique
Luc Bailly, 05-07-2013 20:42
Luc Bailly
Re : Phaeosphaeriaceae
Hi all,
I'm also interested in Shoemaker's Phaeopsphaeria monograph :)
Thanks in advance - LUC.

About this sample: it's rather a Phaeosphaeria (peridium rather thin and transluscent) that a Leptosphaeria s.str. (peridium thick and black, not transluscent).