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12-05-2024 11:48

Michel Hairaud Michel Hairaud

Bonjour , Voici une récolte d'une Rhytismataceae

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Good afternoon, Thursday during an inventory we f

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B Shelbourne B Shelbourne

• Mollisia on tree leaves: On dead Quercus leave

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I'm not entirely sure that Encoelia-like is the ri

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A friend found these black gelatnous cups on a twi

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Hi there,i'm looking for following pdf:Morris, E.F

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Cyathicula cyathoidea???
William Slosse, 28-12-2016 21:23
William SlosseOn a dead stem of Urtica dioica growing just above a Crepidotus luteolus. I thought Cyathicula cyathoidea but the spores doesn't fit the plate. Prepared in h²o
Can anyone give me a clue?
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Hans-Otto Baral, 28-12-2016 21:36
Hans-Otto Baral
Re : Cyathicula cyathoidea???
Did the apos have any marginal teeth? Were they long-stalked or not?
Vivien Hodge, 29-12-2016 09:26
Re : Cyathicula cyathoidea???
Hi William/Zotto

I wonder if this could be Crocreas (Cyathicula) cyathoideum var. cacaliae, which can apperently have larger spores than the type and larger than given in E&E.

I found something that looked similar in the UK in 2013 with spores of up to 19.75, measurements taken from spore print - this is essential as they can be larger when simply squashed from the asci. Ref. was the Monograph of Crocicreas by S. C. Carpenter 1981 but I do not actually have a copy so cannot check the full spore range given for the variety.

Vivien





Hans-Otto Baral, 29-12-2016 10:41
Hans-Otto Baral
Re : Cyathicula cyathoidea???
C. cacaliae in Carpenter has spores (5)9-14(17) x (1.5)2-2.5(3) µm. The present ones are 15-16 x 2.7-4 µm. Also, C. cacaliae has a low oil content while this one has a very high content.
William Slosse, 29-12-2016 18:24
William Slosse
Re : Cyathicula cyathoidea???
Dear Zotto,

this is a very tiny species.
The apotheciahave no marginal teeth and they have a stalk as long as the cup.
Pictures are x100.

William
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Hans-Otto Baral, 29-12-2016 20:41
Hans-Otto Baral
Re : Cyathicula cyathoidea???
It is quite rare that C. coronata occurs without teeth, or possibly it is a separate species, but this is unclear and perhaps undescribed.