19-07-2011 19:48
Enrique Rubio
Hi to all:These perithecia grow on a well develop
01-03-2011 23:52
Miguel Ángel Ribes
Buenas noches Esta especie está recogida sobre p
19-07-2011 11:25
Martin Bemmann
Dear forum,can someone provide a digital copy of t
18-07-2011 21:51
Alex Akulov
Dear Friends Today, during the review of other sp
19-07-2011 09:12
Alex Akulov
Dear FriendsCan you tell me whether there are any
18-07-2011 18:04
Beñat Jeannerot
Adio à tous,Si vous aimez les lichens et ascomyc
18-07-2011 19:43
Nedim Jukic
Hello and greetings from Bosnia & Herzegovina
18-07-2011 17:38
Alex Akulov
Dear Friends Are you familiar with this species,
Hi,I would appreciate very much confirmation or correction of this determination. I am confused with quite inconsistent information found in literature; for example regarding substratum (Betula only?), size of ostioles (from 'very small, barely visible' to '6-sulcate, large, conspicuous'). So, I am not sure in it.
Thanks for your time for responding.
Amadej
Spores: Me = 7.4 x 1.8 microns; Qe = 4,2
Asci: many-spored
Stromata: 2-5.5 mm in 'diameter', ostioles of mature stromata small, barely visible
Substratum: Corylus avellana, dead, rotten, still standing, still in bark branch
Place: Trenta valley, Julian Alps, elev. 615 m
Habitat: light mixed wood, bushes, at the edge of a pasture; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C
No pigments visible in 5% KOH dissolute.
Difficult genus because a modern taxonomic study is lacking. The only key to the European Diatrypella species I am aware of, is included in the following paper:
Vasilyeva, L. & C. Scheuer (1996) Neuere Aufsammlungen stromatischer Pyrenomyceten aus Österreich, insbesondere der Steiermark. Mitt. Naturwiss. Ver. Steiermark 126: 61-82.
(download: http://www.zobodat.at/pdf/MittNatVerSt_126_0061-0082.pdf).
These authors follow a narrow species concept in which D. favacea occurs on Betula. On the contrary, Croxall 1950 (Studies on British Pyrenomycetes. III. The British species of the genus Diatrypella CESATI & DE NOTARIS. - Trans. Brit. Mycol. Soc. 33(1/2): 45-72) considers D. favacea, D. angulata and D. verruciformis as one species (D. favacea). More papers see https://www.verspreidingsatlas.nl/0593010 (under the tab "artikelen').
Eduard
Many thanks for your comment and the interesting links. They helped me a lot to get a better understanding of the situation in present taxonomy of this genus. So, I believe this find corresponds best (based on telemorph traits only) to either (old stile) Diatrypella favacea or Diatrypella verruciformis (according to sources, which tie D. favacea exclusively to Betula). However, this name is (still?) not recognized by IF.
Thanks a lot again.
Amadej