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03-09-2025 12:44

Enrique Rubio Enrique Rubio

Hi to somebody.I would like to know your opinion o

02-09-2025 10:28

Castillo Joseba Castillo Joseba

De ayer en madera muy podrida de haya (Fagus)A ver

31-08-2025 19:41

Enrique Rubio Enrique Rubio

Hi to someone.I need to download this issue of Sve

02-09-2025 11:34

Thomas Læssøe

https://svampe.databasen.org/observations/10527903

31-08-2025 17:32

Michel Hairaud Michel Hairaud

Bonjour, Pas d'identité trouvée pour cette réc

01-09-2025 08:42

François Corhay

Un ami, conservateur d'une RN en Belgique, m'a adr

31-08-2025 14:34

Thomas Flammer

I have found a Rutstroemia on abt. 2000 m on Alnus

29-08-2025 19:04

Thomas Flammer

Spores 21.2 - 26.2 x 8.3 - 11.3 µm - Q: 2.20 - 2.

30-08-2025 18:29

Joaquin Martin

Hi,I found this undetermined ascomycete on broadle

28-08-2025 17:24

Thomas Flammer

I know, that this is not the real topic of this fo

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Nectriella on Typha 1
Hans-Otto Baral, 16-07-2008 17:39
Hans-Otto BaralHi Christian & Amy and everybody

I promised Amy to collect Hypocreales, here are two on Typha. I collected in a forest pond here in Tübingen dead upright Typha latifolia shoots standing in the water, with the outer sheaths completely dry, and in about 20-40 cm above water level were minute orange dots which I first thought to be orbiliaceous. It was a further surprize that there are two species.

Now, I think one of them must be a Nectriella because the perithecia are permanently subepidermal. There are long thin hyphae around the perithecial wall but no true hairs. Pale yellow oil drops are seen in the wall cells. Interestingly the warts on the spores disappeared in heated KOH. I considered N. paludosa or N. curtisii, mainly because of the substrate. The size of the living spores would well match the data in Rossman & Samuels 1999, but not the size of the dead spores.

Perithecia 120-200 µm diam, subepidermal. Sp. *17-19.5(-21) x 4.3-5.5 µm, distinctly finely & densely warted-punctate, KOH heated 14-17 x (3.5-)3.8-4 µm!, smooth!

Zotto
  • message #5138
Hans-Otto Baral, 16-07-2008 17:41
Hans-Otto Baral
Re:Nectriella on Typha 1
Living spores (in water)
  • message #5139
Hans-Otto Baral, 16-07-2008 17:41
Hans-Otto Baral
Re:Nectriella on Typha 1
yellowish oil drops in cells of perithecial wall
  • message #5140
Christian Lechat, 16-07-2008 18:08
Christian Lechat
Re:Nectriella on Typha 1
Dear friends,
Zotto, maybe it is Nectriella dacrymycella, I studied one collection of this species three years ago, collected by Bruno Coué on Iris.
Can you please send us an image (micro) of Hyphae or hairs ?
Amitiés :)
Hans-Otto Baral, 16-07-2008 21:46
Hans-Otto Baral
Re:Nectriella on Typha 1
Here is a photo of hyphae around perithecia
  • message #5147