Accès membres

Mot de passe perdu? S'inscrire

20-04-2019 01:02

Valencia Lopez Francisco Javier

Hola a todos/asAdjunto fotos de unas supuestas Tri

21-04-2019 21:40

Joop van der Lee

Found on cow dung.Measurements of the perithecia a

21-04-2019 12:06

Castillo Joseba Castillo Joseba

Me mandan el material desde Galicia,  recolectado

20-04-2019 10:47

Castillo Joseba Castillo Joseba

me envian esta muestra recolectada en madera de eu

12-04-2019 14:11

Michel Hairaud Michel Hairaud

Bonjour, Voici une Helotiale manifestement liée

20-04-2019 05:16

Roland Labbé

Bonjour ! Voici un anamorphe inconnu de nous, Sp

18-04-2019 15:25

Castillo Joseba Castillo Joseba

Especimen  con apoterios en forma de disco de col

16-04-2019 15:10

Malcolm  Greaves Malcolm Greaves

HelloCan someone help with this found on a dead/dy

14-04-2019 16:53

Marc Detollenaere Marc Detollenaere

Dear forum, On the bark of Larix I found some som

13-01-2019 21:29

Ethan Crenson

I find this unknown (to me) asco in the same locat

« < 1 2 3 4 5 > »
Unguiculariopsis-like, but...
Michel Hairaud, 12-04-2019 14:11
Michel Hairaud

Bonjour,


Voici une Helotiale manifestement liée au pyrenomycète Camarosporidiella laburni (det. A. Gardiennet) et qui évoque donc un Unguiculariopsis.


Mais ! Les caractères micro ne sont guère compatibles avec le genre, voire peut être même avec la famille des Cordieritidaceae ??


ApOthecia up to 2,5 mm . gregarious, Ascus H- and IKI - 75-95 µm. PS 30 µm Spores cylindrical to slightly allantoid, OCI 1-1,5 . 11-13 x 2,8-31 µm. PAraphyses rather lanceolate, septate, covered with amorphic hyaline matter , with no VB visible in water but some patches are stained in CRB.


Medulla T. intricata of almost parallel hyphes x 2-3 µm . Ectal of globose cells x6-12 µm covered with amorphic red-brown matter.  Margin hairs up to 150 µm x 3-7 , walls red-brown and granulous as in LAchnum (!) , which can be seen after KOH or in Congo Red. KOH dissolves the brown pigment . No ionomidotic reaction, no cristals.


Toute aide sera bienvenue. Amitiés. Michel

  • message #57248
  • message #57248
  • message #57248
  • message #57248
  • message #57248
  • message #57248
Hans-Otto Baral, 15-04-2019 08:22
Hans-Otto Baral
Re : Unguiculariopsis-like, but...
Hi Michel
not easy case! But you say the brown pigment dissolves in KOH. If so, it should extrude in the medium, does it? But you say "not ionomidotic"?

could you show some hairs in closeup to better see the warts?

Various characters tell agains Unguiculariopsis, including absence of croziers, warted sublanceolate paraphyses, dissolvable pigment, and hair features. But the family I think is correct.
Zotto
Michel Hairaud, 17-04-2019 09:28
Michel Hairaud
Re : Unguiculariopsis-like, but...
Thanks, Zotto.

As the hairs are strongly agglutinate , I tried KOH to gain visibility but may be the pigments are not actually dissolved. I do not notice that they extrude .


here is a comparison between KOH 5% and tap water. I also tried closeups . These warts seem not firmly fixed to hair walls.


Michel

  • message #57337
  • message #57337
Hans-Otto Baral, 17-04-2019 09:40
Hans-Otto Baral
Re : Unguiculariopsis-like, but...
O.k., so non-ionomidotic. I see a little similarity with what I call "aff. Hyphodiscus" (viridula, "sericea") but which genetically belongs in Cordieritidaceae. From this your fungus differs in wider, almost sublanceolate, rough paraphyses. I think a relationship with this family is quite probable. A genetic result would be interesting.
Michel Hairaud, 20-04-2019 12:36
Michel Hairaud
Re : Unguiculariopsis-like, but...

I wonder why my answer does not appear...


Yes Zotto, the comparison shows similarity.


A sequence is sheduled. Hope we can get a clear result.


THanks again . Michel