Accès membres

Mot de passe perdu? S'inscrire

21-09-2017 08:27

BERNARD CLESSE BERNARD CLESSE

Bonjour à tous,Ci-joint ce que je pense être un

20-09-2017 11:27

Edvin Johannesen Edvin Johannesen

This Hymenoscyphus (?) was found on Gymnocarpium d

10-09-2017 20:58

BERNARD CLESSE BERNARD CLESSE

Sur laissée de sanglier, en pessière fraîche.

13-09-2017 08:09

Ethan Crenson

Hello,In the Bronx, Pelham Bay Park, New York, US.

20-09-2017 13:32

Viktorie Halasu Viktorie Halasu

Hello forum,last week I finally found a Smardaea b

16-09-2017 12:45

Lothar Krieglsteiner Lothar Krieglsteiner

... collected this week in Nature Reserve "Žofín

18-09-2017 23:14

Philippe Louasse

Bonsoir à tous, Les 9èmes Journées mycologique

12-08-2014 11:56

Zuzana Egertova Zuzana Egertova

Hello, in this ascomycete everything seems to fit

18-09-2017 17:54

Rubén Martínez Gil Rubén Martínez Gil

Hola a todos. Estoy buscando este artículo: Med

21-08-2017 01:44

Ethan Crenson

In the Green Mountains of Southern Vermont, US. 

« < 1 2 3 4 5 > »
Lophiostoma vigheffulensis?
Per Vetlesen, 13-05-2017 20:58
Growing on Juniperus communis wood in Stange, Norway. Immersed – superficial, Spores; hyaline, (brown in very late stage of maturity?), 3-4 (-5) septate, mocuos sheat present, no terminal appendages, (21.9) 26.8 - 31.2 (33.9) × (4.3) 4.8 - 6.1 (6.6) µm; Q = (4.3) 4.7 - 6 (6.4); N = 40; Me = 29.1 × 5.5 µm ; Qe = 5.3
Asci clavate (- cylindrical) (84.9) 86.4 - 97.6 (102.4) × (8.5) 8.6 - 10.4 (11) µm; Q = (8.1) 8.4 - 10.8 (11.4) ; N = 10; Me = 93.7 × 9.5 µm ; Qe = 10
Using Holm & Holm 1988 it comes out as Lophiostoma myriocarpum, but I do not think it is that one because the spores do not have numerous droplets and have mocuos sheat. In the notes they mention L. vigheffulense and I understand it as they mean they are synonym?
I have not been able to find a good description of L. vigheffulense (do any of you have one?), but I think it looks much like this one, despite that the spore size is a bit different: http://www.ascofrance.com/forum/18183/interesting-lophiostoma-on-fagus
Is it L. vigheffulense?
Thanks in advance for help!
Best wishes
Per
  • message #48813
  • message #48813
  • message #48813
  • message #48813
  • message #48813
Eduard Osieck, 13-05-2017 21:57
Re : Lophiostoma vigheffulensis?
Hi Per,

That species is described in the following paper: Chesters, C.G.C. & A. Bell (1970) Studies in the Lophiostomataceae. Mycological Papers 120: 1-55. I will send you a copy by email. I do not think it concerns the species you have found because L. vigheffulensis appears to have rather narrow spores,is only 3-septate and no constrictions: "Ascospores are 17-25 x 3 um, hyaline, fusiform, the outer wall not constricted at the junctions of the 3 transverse septa."

Eduard
Per Vetlesen, 13-05-2017 22:17
Re : Lophiostoma vigheffulensis?
Hi Eduard
Thank you very much for your comment and the paper you sent me. According to that it is obvious another species.
Per
Mlcoch Patrik, 18-05-2017 18:24
Mlcoch Patrik
Re : Lophiostoma vigheffulensis?
It isn't Lophiostoma and it isn't famili Lophiostomaceae. This is probably genus Leptosphaeria, very interesting collection. On dead wood Juniperus can grow several species from the genus Leptosphaeria. L. juniperi have 3-septate ascospores 18 - 20 x 6 um, L. juniperina have as well as previous 3-septate, but 24 - 28 x 7 - 8 um and clavate asci, similary L. saprophilla. Your collection can be more likely Leptosphaeria ginima, which have ascospore 27 - 35 um length, (4)5 - 6 -septate, hyaline to yellowish-brown.
Per Vetlesen, 18-05-2017 21:02
Re : Lophiostoma vigheffulensis?
Hi Patrik,
Thank you for your comments that are very interesting.
I have no experience with Leptosphaeria, and do not have any literature about it (if you have any paper I would appreciate if you can send it to me). After Googling I understand that the genus has a papilla and circular ostiole? This asco has a flattened neck, opening by a slot-like ostiole. I have read the description L ginimia in Mycologia 93(1–6): 1006 (2001) its spores have, as you write 5-6 septa, my fungus have 3-4, and the upper mid cell are not swollen.
Per