07-05-2024 00:04
Ethan CrensonA friend found these black gelatnous cups on a twi
06-05-2024 10:02
François BartholomeeusenGood morning,At the end of an excursion in De Zegg
05-05-2024 09:59
Gernot FriebesHello,I failed to identify this anamorph, which gr
19-04-2015 20:20
Enrique RubioHi again Could you help me with this paper? NANN
30-04-2024 16:22
François BartholomeeusenDear forum members,On April 25 2024, I found one f
03-05-2024 18:04
Riet van OostenHello, Found by Laurens van der Linde on Rubus fr
01-05-2024 23:22
Ethan CrensonHi all, Found late last week in a New York City p
Salut à tous,
I have collected this species which I can't identify which grows sparsely on (living) ascomata of Echinosphaeria canescens in the South of England (June 8th 2014):
Pseudothecia pale orange to pink, to 270 µm diam.
Ascospores 62-135 x 3.3- 4.7 µm, hyaline, multiguttulate, (11)-14-(16) septate, tending to be more cylindrical towards the apical end and more acute towards the basal end. Helicoidally twisted inside the ascus but seeming to 'unwind' as the ascus reaches full turgor.
Asci thick-walled (especially when dead), no apical apparatus.
Hairs encircling the ostiolar area, hyaline, aseptate, thick-glassy walled, sometimes aggregating into 'tufts', to 160µm long.
There were three types of conidia present that I thought might be of interest - Types of conidia I usually associate with aquatic habitats (particulaly the Articulospora-like ones) but this was collected in a dry place, well away from any water source.
I should perhaps add that I'm not sure if there is any material left on the branch I collected - Trying to find the tiny pseudothecia in amongst the Echinosphaeria spines is quite difficult!
I was quite unsatisfied with my photographs of the species, so I also prepared a sketch that may (or may not) make things clearer.
Can anyone help?
Amitiés,
http://www.ascofrance.fr/forum?id=30212
Spores shorter: 48-55 x 2.5-5.8 µm , with much less septa (3-5).
On Fagus bark in association with Tubeufia cerea.
The Trinacrium-like conidia you have observed belong to Orbiliaceae, but the curved ones might belong to the pyreno.
Zotto
Hi Zotto,
It took me a little while, but I found your post (the link takes me somewhere else) and I agree, our species are very close!
Trinacrium refers to the three-pronged conidia, right? There were few of these compared to the other two types - The Y-shaped conidia were the most abundant.
I have studied 'The Tubeuficeae & Similar Loculascomycetes' Rossman but got absolutely nowhere! If anyone has the key to genera included in this article I would be interested in seeing it (I picked up the article here on Ascofrance and it's missing a page or two...)
Nick