13-03-2015 18:14
Enrique Rubio
Hello again I'd like to know your opinion about t
12-03-2015 19:10
Steve ClementsHi,I tried to key out this minute asco using Ellis
13-03-2015 08:48
Katarina PastircakovaHello,if anyone has access to Butin, H. European
11-03-2015 19:06
Jenny Seawright
Hello all, I was wondering if anyone might have a
10-03-2015 14:50
Jenny Seawright
Hello all, I noticed a gelatinous substance on con
04-03-2015 09:45
Miguel Ángel Ribes
Hello friendsThis small, < 1 cm Peziza, was gro
20-02-2015 00:25
Miguel Ángel Ribes
Good night againThis dark-violet, 4-5 mm Marcellei
Hello againI'd like to know your opinion about this (I think) Anthostomella species growing on small branches (20 mm broad) of Fraxinus excelsior lying on the ground, at the sea level (Botanical Garden of Gijón/Asturias/Spain).
The inmersed, gregarious, blackish, roundish or elliptical perithecia, 1.20-1.35 microns in diam., are singly, in pairs or small groups just beneath the bark with only the short necks protruding. Many times an stromatized blackish clypeoid structure is present over the perithecia.
Asci cylindrical, 145-155 x 7.5-8,5, unitunicate, with an apical cylindrical apparatus up to 3 microns long, deeply blueing in IKI, with 8 more or less uniseriate 2-celled ascospores that seem to have very small caps at the poles (that are not well visible in china ink). These ascospores, close to those of A. rubicola, are allways hyaline or only a few of them at most slightly brownish inside the asci.
I don't know any species that fits with my fungus
Have you any idea?
Thanks again
I have seen two collections of your fungus from France, one on Quercus ilex twigs collected by Paul Leroy, the other one on Acer twigs by C. Lechat. Very few ascospores develop a pale brown cell lacking a germ slit, just like in A. rubicola. Likely an undescribed lignicolous counterpart of A. rubi, as you suggested. Frustrating.
Cheers,
Jacques
Thanks again, Jacques
There exists some pyreno that you have not seen? I think not...
My material will be keeped in my herbarium. Maybe you will need it...
Hi Jacques
How did you describe the small polar caps of the ascospores? Had your spores these elements?
An important differential character from A. rubi migght be the tendency to cluster in small groups and to have well differentiated papillate ostioles.
Jacques
Jacques