Accès membres

Mot de passe perdu? S'inscrire

14-05-2014 21:14

Ralph Vandiest Ralph Vandiest

Hello,I found this black frb on unknown herbacious

13-05-2014 21:28

Ralph Vandiest Ralph Vandiest

Hello,I found this species on heracleum. Size up

14-05-2014 12:19

Leandro Sánchez Leandro Sánchez

Sobre excrementos de ganado vacuno o equino, hasta

14-05-2014 02:51

M Jonathan M Jonathan

trouvé sur bois, malheureusement pas de photograp

13-05-2014 23:15

Bometon Javier Bometon Javier

Apotecios de hasta 700um, himenio olivaceo, en hoj

21-03-2014 11:25

maurice pelissier maurice pelissier

bonjour j'ai trouvé ce week end ces pezizales bla

08-05-2014 11:46

Dragiša Savic

I found this Pupa (Lepidoptera: Coleophoridae) inf

14-05-2014 01:48

Patrice TANCHAUD

Bonsoir, récolte réalisée probablement sur pé

13-05-2014 09:03

René Dougoud

Chers Tous, Je me permets de vous demander si v

13-05-2014 10:17

René Dougoud

Chers Tous, Je me permets de vous demander si v

« < 1135 1136 1137 1138 1139 > »
Pirottaea species
Ralph Vandiest, 14-05-2014 21:14
Ralph VandiestHello,

I found this black frb on unknown herbacious stem. Size up to 0,4mm, spores
8/11x2µm with 2/3 small droplets (<1µm) at the ends of the spores. Asci
28/38x6/8µm, hairs 23/32x3.5/5µm. Asci base colouring red in Lugol.

Any suggestions? Maybe P gallica?

Regards,

Ralph
  • message #29292
  • message #29292
  • message #29292
  • message #29292
  • message #29292
  • message #29292
  • message #29292
  • message #29292
Hans-Otto Baral, 14-05-2014 21:56
Hans-Otto Baral
Re : Pirottaea species
I already gave the idea of Pirottaea gallica by mail. P. senecionis has longer spores.

Zotto
Ralph Vandiest, 14-05-2014 22:10
Ralph Vandiest
Re : Pirottaea species
hello Zotto,

Close call if you ask me but I have no expereince at all with this genus. When I compare both species in my key , my measurements fit better P senecionis, especially because  I also saw systematicly the minute guttules at both poles

Spores 7-12x2-3 ?m, 0(1)-septate, with a few minute guttules at both poles, LC 2; setae 25-60 ?m long; saprobic on stems of Senecio silvaticus, S. viscosus; phen.: IV-VIII Pirottaea senecionis
Spores 7-9 ?m long, non-septate; asci 30-35x5-6 ?m: setae mostly 30-45 ?m long; saprophytic on Cichoriumc(similar fungi onCicerbita and Picris); phen.: VIII-IX Pirottaea gallica

PS the only thing about the host that I remember was that it was robust (min 1meter tall  with 1cm diam.

Hans-Otto Baral, 14-05-2014 22:15
Hans-Otto Baral
Re : Pirottaea species
I assume you use Bernard's key. I abandoned P. senecionis because I have in my folder a number of collections in which the spores show a range of around 10-14 or 12-18 µm. Hope they are not misidentified.
Ralph Vandiest, 14-05-2014 22:19
Ralph Vandiest
Re : Pirottaea species
Indeed I used Bernard's key. Might ask him to have a look at this species...