07-12-2014 22:13
Ralph Vandiest
Hello, I found these violet frb on deer dung. Siz
04-12-2014 19:30
Rubén Martínez-Gil
Hola a todos. He vuelto a encontrar esta Peziza e
07-12-2014 19:07
Edit Szilvásy
Hi all, Today I found this asco on the ground in
07-12-2014 19:10
Chris Yeates
Bonsoir tousthis was collected on a dead, attached
06-12-2014 16:09
Uwe Lindemann
Hi Forum,does somebody know whether it exists an I
07-12-2014 17:51
Blasco Rafael
Hola tengo esta pequeña muestra de 0,5 mm recogid
06-12-2014 22:49
Joop van der Lee
Found on horse dung, unfortunally I have not been
06-12-2014 23:38
Martin PastircakDear collegues,does by chance anyone has this publ
25-03-2014 12:22
Peter ThompsonHello Everyone,I have been sent fruit bodies of a
Hello,
I found these violet frb on deer dung. Size up to 0,4mm. I see dark coloured tips of asci protruding above frb. Problem is that I see clustered brown (max 10%) spores and loose hyaline ones (90%). Which species could this be and which spores belong to the violet frb?
Loose spore in 8-spored J+asci, size 15/17x7/7,5µm, spores are smooth, without striae and thick walled (1µm), asci up to 21x130µm, paraphyses not swollen
Clustered spores: brown, 40/45x15/17
regards,
Ralph
you have a Saccobolus species there. The spores start off as free in the ascus and then by a wonderful phenomenon become united in a single 'spore-ball' the spores becoming pigmented as they mature. The pattern formed by the spores in the spore-ball is constant within a species.
Most of the spores in your images are immature. Do you have van Brummelen's 1967 monograph?
Cordialement
Chris
This is probably Saccobolus depauperatus; to comfirmed by other observations.
Michel.
Hello,
Thanks for the info. I don't think however it's depauperatus as average spore clusters are over 40µm long. Could it be versicolor?
PS I will check again because all terms of the key I use aren't clear to me.
regards,
Ralph
Hello Ralph,
It can be A. depauperatus but also A. versicolor it depends on the size of the spore cluster (your photo shows pattern III) and the single spores.
For A. depauperatus cluster is 28-37x10-13 um; single spores 10-14.5x5-7.5 um.
For A. versicolor cluster is 40-62x14-19 um; single spores 13-21.5x6.5-9.5 um.
Spores seem to be immature but when your measurement is correct I would go for A. versicolor. Also the size of the ascus does compare with A. versicolor in my opinion
Measuring cluster and spore sizes have been made easier with the software program that goes with the microscope camera, works for me.
Joop