Accès membres

Mot de passe perdu? S'inscrire

11-12-2019 23:29

Juuso Äikäs

I found these in a Picea abies dominated forest in

11-12-2019 22:21

BERNARD CLESSE BERNARD CLESSE

Bonsoir à toutes et tous,Pourriez-vous me confirm

08-12-2019 11:01

Gilbert MOYNE

Bonjour, Un petit champignon que m'a remis Andgel

13-12-2019 20:42

Götz Palfner Götz Palfner

Bonjour tous,Sorry, but as my French is crap, I wi

13-12-2019 16:20

Chris Yeates Chris Yeates

Bonjour tous this is an area I feel rather ignora

12-12-2019 23:42

Maren Kamke Maren Kamke

Hello together, can someone provide me with this

12-12-2019 18:36

Roland Labbé

Bonjours ! Voici un Trichoderma (Hypocrea) inconn

07-12-2019 22:22

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un asco que hemo

11-12-2019 23:25

Ethan Crenson

Hello all,This was found by a friend in New York C

09-01-2015 12:57

Alan Rockefeller Alan Rockefeller

I found this in a semitropical area of Queretaro,

« < 1 2 3 4 5 > »
Nimbomollisia eriophori
Nina Filippova, 14-02-2013 09:16
This specimen was collected from Scheuchzeria palustris leaves in wet bog hollow.

The released spores were without clear truncate extensions, rather with irregular gelatinose sheath, but inside the asci such extensions could be traced.

Apothecia turbinate to discoid, sessile, 260-430 mk in diam, about 150 mk high, hymenium flat or concave, light brownish, outer surface brown, site single, superficially on the substrate.

Excipulum from textura globosa, cells about 15 mk at base, 10 mk at flanks, at the edge short-clavate, about 10 mk long; cells with thickened walls, look as glued together, brown at flanks, lighter at the base and edge; asci wide-cylindrical or some enlarged to obtuse-conical tip, with short stalk, with small clamp, pore euamyloid, 74-105 x 12,4-17,6; paraphyses cylindrical, branched, segmented, with enlarged, circinate apices, which rised under the asci tips, immersed in gelatinouse substance, 1,5 mk broad at base, 3,5 at tips; spores ellipsoid, 2-celled, when in asci with gelatinose extensions (seen in lugol), 22 (20,6-25,3) x 5,5 (4,8-6,4).
  • message #21885
  • message #21885
  • message #21885
  • message #21885
  • message #21885
  • message #21885
Hans-Otto Baral, 14-02-2013 09:46
Hans-Otto Baral
Re : Nimbomollisia eriophori
I don't think so. Nimbomollisia was defined by Nannfeldt with a very low apical ring. I think he would had classified this as Niptera. I also think that the spore sheath should still be seen.  I remember that Nimbomollisia gives a clear yellow reaction with KOH (VBs in paraphyses). Did you notice anything?

Niptera lacustris is a difficult species but should be compared.

Zotto
Michel Hairaud, 14-02-2013 09:48
Michel Hairaud
Re : Nimbomollisia eriophori
Hi Nina, 

N. eriophori is a regular species in the bogs of the Natural Parc of SOmiedo where we will have an Ascomycota congress in june.

We find it on dead leaves of Eriophorum angustifolium.

A tiny species indeed (0,15 - 0.25 mm) with extroardinary micro features (swollen paraphyses, gelatinous spore extensions...)
Here are a few images . 

Amitiés
Michel
  • message #21887
  • message #21887
  • message #21887
  • message #21887
Michel Hairaud, 14-02-2013 09:55
Michel Hairaud
Re : Nimbomollisia eriophori
Hi again, (bonjour cher Zotto)

To illustrate Zotto's purpose, here is an image of an ascus tip in IKI


Michel
  • message #21888
Hans-Otto Baral, 14-02-2013 16:33
Hans-Otto Baral
Re : Nimbomollisia eriophori
Thanks Michel. The difference is actually not big. And when I see that the free spores are devoid of the sheath (the sheath actually swells enormously when the ascus turgor is released), then Nina may well be right. I also see on my drawing that the ring is Calycina-like, while on a photo by Enrique (ERD 4532) the ring is very low.

While the type of Niptera lacustris is inamyloid, the specimens in my folder "lacustris IKI+" are not easily separable from N. eriophori. I did not see the conspicuous gel caps at each end inside the living asci, however, only ?sometimes at one end. That collection also tends to have 2-septate spores inside the living asci.

Zotto
Nina Filippova, 14-02-2013 18:11
Re : Nimbomollisia eriophori
Thank you, Michel, Zotto.

I checked several other apothecia to see better gelatinose extensions, but they are not present really. Only  gelatinose sheath may be seen inside asci (which enlarged sometimes at ends), but released spores are smooth. Paraphyses not changes in KOH (but they are dead). Ascus pore blue in lugol-water. All spores 1-septated, 22,2 (20,9-24) x 5,8 (5,2-6,7) (Q=3,8; N=16) (in N. eriophori, as descripbed in Nannfeldt, they are some smaller). And paraphyses in mine up to 3,5 mk at enlarged tips (not as wide as in Nannfeldt, 5 mk).

So, probably it is "Niptera lacustris J+" (i don't know what it is now, i refer to Zotto's collection). The paper on Niptera which i found (Nannfeldt, 1985) in german and need me more time to understand.


I found something more close to N. eriophori in my collection of pictures (without herbarium specimen). It has clear gelatinose extensions even in low quality pictures. Paraphyses there  look similar as in  previous collection. Should be searched again, so).

  • message #21895
  • message #21895
Hans-Otto Baral, 14-02-2013 19:44
Hans-Otto Baral
Re : Nimbomollisia eriophori
Something happened, I lost my answer to this. I try to summarize:

Your new images are clearly N. eriophori.

Spore size varies considerably in this species, between about 15-20 x 4.5-5 up to 20-27 x 6-7.5.

KOH gives a yellow reaction to both this and "lacustris IKI+".

Zotto