22-12-2024 10:19
Simon GurtnerHello,can anyone help me identify this small ascom
21-12-2024 12:45
Marc DetollenaereDear Forum,On naked wood of Fagus, I found some ha
22-12-2024 10:53
Bernard CLESSEPourriez-vous me confirmer ma détermination de ce
20-12-2024 17:32
Louis DENYBonsoir forumTrouvé à Belfort, 400 m altitude, s
17-02-2013 08:38
Alain GARDIENNETBonjour, J'ai trouvé ces acervules sur feuille d
21-12-2024 09:08
Castillo JosebaMe mandan el material seco de Galicia, recolecta
17-12-2024 12:33
Lothar Krieglsteinerthis fluffy anamorph was repeatedly found on decid
Nectriaceae on bark of Banksia
Hans-Otto Baral,
23-10-2007 18:35
on a dry branch of Banksia grandis in SW-Australia grows on the bark (peridermis) among the hairy felt a nice Nectriaceae which was at first sight taken for an Orbilia. It is characterized by rather large spores. The orange peridium turns deep pink in KOH and does not seem to have a perceptible ostiole. Any idea? I have not tried any key.
Sp. *29-31 x 9.5-10.3 µm, smooth, hyaline. Many spores still alive 13 months after collection.
There is also a polysporous Nitschkia (?broomeana) on this branch.
Zotto
Hans-Otto Baral,
23-10-2007 18:37
NC NC,
23-10-2007 19:04
Re:Nectriaceae on bark of Banksia
Why not send this information to Amy Rossman or Gary Samuels?
Dick
Dick
Christian Lechat,
23-10-2007 19:41
Re:Nectriaceae on bark of Banksia
Hi Zotto,
is there a stroma? which is the thickness of the perithecial wall? cupulate ascomata when dry?
could you make an image of vertical section of ostiolar region? :)
is there a stroma? which is the thickness of the perithecial wall? cupulate ascomata when dry?
could you make an image of vertical section of ostiolar region? :)
Hans-Otto Baral,
24-10-2007 16:50
Re:Nectriaceae on bark of Banksia
Hi Christian
The perithecia are actually rather strongly collapsing when dry. The spores have a wider range: *(26-)29-31(-35) x 9.5-10.3(-11.3) µm, and shrink considerably in KOH: (25-)28-33.5 x 8.2-9 µm. The The peridial wall is laterally upto 30 µm thick. I did not succeed, however, to hit the ostiolum, the perithecium is apparently brittle when dry. Also it is completely immersed among the dense hair felt on the bark.
The perithecia are actually rather strongly collapsing when dry. The spores have a wider range: *(26-)29-31(-35) x 9.5-10.3(-11.3) µm, and shrink considerably in KOH: (25-)28-33.5 x 8.2-9 µm. The The peridial wall is laterally upto 30 µm thick. I did not succeed, however, to hit the ostiolum, the perithecium is apparently brittle when dry. Also it is completely immersed among the dense hair felt on the bark.
Hans-Otto Baral,
24-10-2007 16:52
Christian Lechat,
24-10-2007 21:20
Re:Nectriaceae on bark of Banksia
Dear Zotto,
according to your data, I think it is a Cosmospora but without to see it, it is difficult to say something
You can send it to me, I will be glad to see it because I don't find any species like this in Cosmospora genus.
Regards
according to your data, I think it is a Cosmospora but without to see it, it is difficult to say something
You can send it to me, I will be glad to see it because I don't find any species like this in Cosmospora genus.
Regards