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Mot de passe perdu? S'inscrire

08-05-2019 15:44

Guy Buddy

Fruiting from a dead Quercus leaf from the forest

08-05-2019 17:28

Edvin Johannesen Edvin Johannesen

These small, black cushions were collected on a th

07-05-2019 21:54

Alain GARDIENNET Alain GARDIENNET

Has anybody of you ever met this amazing pycnidial

08-05-2019 07:36

Zuzana Egertova Zuzana Egertova

Hello,could someone send me this thesis, please?La

07-05-2019 15:47

Gao Hanxing

Dear all,I am looking for the following document:1

04-05-2019 10:34

Gao Hanxing

Hello all, I found this pyrenomycete, which I ass

03-05-2019 10:16

Zeljko Tomic

Dear colleagues, this is something that I have not

06-05-2019 21:05

Joop van der Lee

I am looking for the following document:Luck-Allen

04-05-2019 22:16

Riet van Oosten Riet van Oosten

Hello, Found by Willy Heimeriks on 27-04-2019, Th

05-05-2019 23:28

Lieve Deceuninck Lieve Deceuninck

BonjourJe vous présente une Scutellinia qui est c

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Lachnaceae?
Guy Buddy, 08-05-2019 15:44
Fruiting from a dead Quercus leaf from the forest ground, Pennsylvania USA. The largest apothecia after incubating the leaf for one day was about .5mm wide.  Hairs, asci, paraphyses are hyaline.  No reaction in KOH, ascus apical apparatus and ends of spores are slightly amyloid in IKI. Hairs have crustations/crystals. Ascus opening width is narrow. 
(8.4) 8.9 - 12.5 (14.1) × (1.5) 1.6 - 2.1 (2.2) µm
Q = (4.6) 4.9 - 6.3 (7.2) ; N = 20; Me = 10.5 × 1.9 µm ; Qe = 5.6
Hair measure:(56.6) 60 - 66.5 (68.7) × 3.5 - 4.8 (5.4) µm
Q = (11.8) 12.4 - 18 (18.3) ; N = 8; Me = 63.7 × 4.2 µm ; Qe = 15.7
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Hans-Otto Baral, 08-05-2019 15:57
Hans-Otto Baral
Re : Lachnaceae?
I am not sure if you mixed something here.
There are almost cylnidrocal spores (living in water) and strongly fusiform ones (in ?CB).
Together with the large spore size I suspect the latter to be Incrucipulum ciliare. But there the hairs are thick-walled and bear crystals, and the living spores would be multiguttulate.

Please, if you have it still fresh, look again in water for the large fusiform spores.
Guy Buddy, 08-05-2019 16:17
Re : Lachnaceae?
Hans
Thanks for the quick response.  Attached are some more photos of the spores in H20.
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Hans-Otto Baral, 08-05-2019 16:27
Hans-Otto Baral
Re : Lachnaceae?
So they are all eguttulate. What is the length of the scale in the spore photos?
Guy Buddy, 08-05-2019 16:41
Re : Lachnaceae?
Sorry, the bar is 20um
Hans-Otto Baral, 08-05-2019 17:36
Hans-Otto Baral
Re : Lachnaceae?
Then you must divide your measurements /2. I measure 11-16  x1.8-2.2.

But I cannot recall s species like this, perhaps American.
Guy Buddy, 08-05-2019 20:18
Re : Lachnaceae?
Hans, you are right.  I measured from a 1000x photo while I was thinking it was 400x. 
The correct spore measurement is:(8.4) 8.9 - 12.5 (14.1) × (1.5) 1.6 - 2.1 (2.2) µm
Q = (4.6) 4.9 - 6.3 (7.2) ; N = 20; Me = 10.5 × 1.9 µm ; Qe = 5.6
Thank you for acute observation and sharing your expertise!