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18-01-2018 01:25

Valencia Lopez Francisco Javier

Hola a todosTengo estos Ascobolus recolectados hac

07-01-2018 17:37

Andrés Valverde Valera Andrés Valverde Valera

Je vous envoie quelques photos d'une Peziza que j'

15-01-2018 23:51

Garcia Susana

Hola,Apotecios encontrados sobre corteza de Quercu

17-01-2018 18:58

Castillo Joseba Castillo Joseba

En Pitolaca americana   me mandan material seco 

17-01-2018 19:11

Castillo Joseba Castillo Joseba

En hoja de eucalipto Tengomuchas dudas con lo que

17-01-2018 14:26

Castillo Joseba Castillo Joseba

En Pitolaca americanaA ver que os pareceSaludosJos

17-01-2018 14:47

Castillo Joseba Castillo Joseba

He encontrado estos ejemplares ... de algo que no

09-01-2018 11:26

Valencia Lopez Francisco Javier

Hola a todos/asEstas pezizas están recolectadas e

16-01-2018 20:28

Blasco Rafael Blasco Rafael

Hola, a ver si me pueden ayudar con esta muestra,

16-01-2018 08:53

Zoltan Lukacs Zoltan Lukacs

Hello, I've picture only. Very little konidiospore

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Cistella on leaves
Marja Pennanen, 18-06-2016 10:48
Hello forum after a long time,

I found these whitish, about 0,2-0,3 mm wide fruitbodies today on leaves of possibly Ribes nigrum.
The spores are about 7-9x2.
The asci are about 35-45x5-7, IKI blue and the paraphysesare a bit lanceolate, about 2-3 wide.
The hairs seems to belong to Cistella, they are nearly all the way coarse, about 20-50x3-6. Their shape varies much.

The species on leaves, that I have definitions, have hairs either coarse on the top or are septate...
Any fresh ideas?

Summer has arrived even here in northern Europe: Marja
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Marja Pennanen, 16-07-2017 16:26
Re : Cistella on leaves
Hello,

I got to come back to this in my opinion even common species here, because I've seen it a lot at different places. I have changed my opinion of the genus. Now I suppose it is a Fuscolachnum.

The apos can be 0,6 mm wide, they come quite flat, when older.
The hairs on the underside are brown. They may reach even the lenght of 70 micrometers. Paraphyses are not very lanceolate, sooner filiform.

The closes one is F. borealis, but these hairs are seldom septate and Ribes is not wery close to Juniperus.

Any fresh opinions?

Marja

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Hans-Otto Baral, 16-07-2017 21:04
Hans-Otto Baral
Re : Cistella on leaves
Yes, Fuscolachnum seems very probable. And you can exclude Rubus as host? F. misellum?
Marja Pennanen, 17-07-2017 13:32
Re : Cistella on leaves
Dear Zotto,

these certainly grow on Ribes nigrum leaves, on the uncerside, where exists yellow spots (resinous).
I have found F. misellum on Rubus idaeus leaves and they have an orange shade, which these do not have. Besides the microscophy of these is bigger and these have not enought septas at hairs.

F. borealis has been found on green needles of Juniperus communis, aren't they resinous...

Marja