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Asco sur bois de Tilia
Enrique Rubio,
06-04-2009 19:32
L'excipulum est gelifiée, avec textura porrecta et les asques (jusqu'a 60 x 7) ont des crochets, 8-spored et IKI rougeatre ou bleu-rougeatre. Spores 5.7-8.3 x 2.8-3.4.
Il croit de maniere gregaire sur le bois de Tilia mort.
Merci de votre aide
I'd like to know your opinion about this small asco (ascomata: 0.2-0.5 micr.) that grows on Tilia sp. wood. Sessile or subsessile. Hymenium umber-greenish-brownish. Excipulum with gelified textura porrecta. Asci up to 60 x 7, 8 spored, with croziers, IKI r or rb.
The distal element of the hairs are spiny (Cistella-like?) . Spores 5.7-8.3 x 2.8-3.4.
Many thanks for your help.
Guy Garcia,
06-04-2009 21:49
Re:Asco sur bois de Tilia
Voir vers Cistella perparvula
Hans-Otto Baral,
06-04-2009 22:09
Re:Asco sur bois de Tilia
Considering the tuberculate hair warts and the gelified excipulum this could well also be a Hyphodiscus. Spores and hemiamyloid ring would fit too.
Zotto
Zotto
Enrique Rubio,
07-04-2009 13:31
Re:Asco sur bois de Tilia
Thank you, Gut and Zotto.
There exists some species of Hyphodiscus that can fits with mine?
Some apos of my collection closely grew on pyrenomycetes
There exists some species of Hyphodiscus that can fits with mine?
Some apos of my collection closely grew on pyrenomycetes
Hans-Otto Baral,
07-04-2009 17:29
Re:Asco sur bois de Tilia
Hyphodiscus becomes more and more complicated. If you send me your plates by email in larger resolution, i will try to compare with my data.
Zotto
Zotto
Hans-Otto Baral,
08-04-2009 23:00
Re:Asco sur bois de Tilia
Dear Enrique
I compared your fungus with my images and come to the conclusion that it should be Hyphodiscus hymeniophilus, if it is a Hyphodiscus at all. The gel alone is not a good character in my opinion to distinguish two genera. In some of my finds I am similarly undecided to which of the two I should place them. But merging them is probably also no good solution.
I do not know Cistella perparvula. Guy, do you have images of a collection? It would perhaps be helpful to have a median section of the excipulum to see better the gelification and the orientation of the cells.
Zotto
I compared your fungus with my images and come to the conclusion that it should be Hyphodiscus hymeniophilus, if it is a Hyphodiscus at all. The gel alone is not a good character in my opinion to distinguish two genera. In some of my finds I am similarly undecided to which of the two I should place them. But merging them is probably also no good solution.
I do not know Cistella perparvula. Guy, do you have images of a collection? It would perhaps be helpful to have a median section of the excipulum to see better the gelification and the orientation of the cells.
Zotto
Guy Garcia,
09-04-2009 22:30
Re:Asco sur bois de Tilia
Bonsoir,
Zotto, je ne connais Cistella perparvula que de la littérature. Voici mes notes sur ce taxon :
Cistella perparvula (P. Karst.) Nannf. 1932 Acta Reg. Soc. Sci. Upsal. 4(8) : 270 [P7]
º Peziza perparvula Karst. 1869 Not. Faun. Fl. fenn [Mon. Pez. Fen.] 10 : 162, n° 145 [P7]
º Mollisia perparvula (Karst.) Karst. 1871 Mycol. Fenn. 1 : 191 [P7 ; S8:341]
º Micropodia perparvula (Karst.) Boud. 1907 Discom. Eur. : 128
? ≠ Pezizella perparvula Karst. in Sydow M. March. n. 577 = ? Pezizella pudica Rehm Disc. : 657 selon S11:406
Diagnose: Apothecia sparsa vel gregaria, subobconica, albida, deorsum fusca, latit. 0,2-0,4 mm. ; sporae oblongatae vel elongatae, rectae vel curvulae, simplices vel guttulis exiguis paucis praeditae, longit. 7-10 mmm.,crassit. circiter2 mmm. ; thecae fusoideo-clavatae, longit. 60-70 mmm., crassit 6-8 mmm., apice iodo non tinctae ; paraphyses parum notabiles. Supra corticem Tiliae parvifoliae (et Betulae ?) prope Lukkarais in Merimasku regionis Aboësis mense Augusto.
Variat stipite brevissimo crasso fusco. Praecedenti nonnihil similis, sed notis datis facillime distinguenda. [Peziza vulgaris Fr. Syst. Mycol 2 : 146 (Desmaz. Cr. Fr. ed. 1 : 1065 et ed. 2 : 465) = Peziza albella With. Arr. 4 : 350 = Peziza avellanae Lasch. in Rabenh. F.E. ed. nov. 28]
Support: sur écorce de Tilia ou autres feuillus.
Notes: exclue du genre Clavidisculum (= Cistella = Discocistella) selon RAITVIIR 1970:79 et absente du genre Cistella (= Clavidisculum = Discocistella) chez RAITVIIR 2004. KARSTEN 1871 :191, lors de la combinaison dans le genre Mollisia signale des apothécies pouvant être substipitées (certainement ce qui influencera BOUDIER pour un transfert dans ses Micropodia) et surtout des asques I-. DENNIS 1949:59 signale des poils lisses faisant référence au dessin de NANNFELDT 1932 : 270, fig. 43d qui a étudié le type.
Biblio: DENNIS 1981 : 175, fig. XXIV K ; ELLIS & ELLIS 1985:5 ; BARAL & KRIELSTEINER 1985:63 ; CANNON et al. 1985:50 ; VA.
Avec des poils lisses difficile d'en faire un Cistella !
Amitiés, Guy
Zotto, je ne connais Cistella perparvula que de la littérature. Voici mes notes sur ce taxon :
Cistella perparvula (P. Karst.) Nannf. 1932 Acta Reg. Soc. Sci. Upsal. 4(8) : 270 [P7]
º Peziza perparvula Karst. 1869 Not. Faun. Fl. fenn [Mon. Pez. Fen.] 10 : 162, n° 145 [P7]
º Mollisia perparvula (Karst.) Karst. 1871 Mycol. Fenn. 1 : 191 [P7 ; S8:341]
º Micropodia perparvula (Karst.) Boud. 1907 Discom. Eur. : 128
? ≠ Pezizella perparvula Karst. in Sydow M. March. n. 577 = ? Pezizella pudica Rehm Disc. : 657 selon S11:406
Diagnose: Apothecia sparsa vel gregaria, subobconica, albida, deorsum fusca, latit. 0,2-0,4 mm. ; sporae oblongatae vel elongatae, rectae vel curvulae, simplices vel guttulis exiguis paucis praeditae, longit. 7-10 mmm.,crassit. circiter2 mmm. ; thecae fusoideo-clavatae, longit. 60-70 mmm., crassit 6-8 mmm., apice iodo non tinctae ; paraphyses parum notabiles. Supra corticem Tiliae parvifoliae (et Betulae ?) prope Lukkarais in Merimasku regionis Aboësis mense Augusto.
Variat stipite brevissimo crasso fusco. Praecedenti nonnihil similis, sed notis datis facillime distinguenda. [Peziza vulgaris Fr. Syst. Mycol 2 : 146 (Desmaz. Cr. Fr. ed. 1 : 1065 et ed. 2 : 465) = Peziza albella With. Arr. 4 : 350 = Peziza avellanae Lasch. in Rabenh. F.E. ed. nov. 28]
Support: sur écorce de Tilia ou autres feuillus.
Notes: exclue du genre Clavidisculum (= Cistella = Discocistella) selon RAITVIIR 1970:79 et absente du genre Cistella (= Clavidisculum = Discocistella) chez RAITVIIR 2004. KARSTEN 1871 :191, lors de la combinaison dans le genre Mollisia signale des apothécies pouvant être substipitées (certainement ce qui influencera BOUDIER pour un transfert dans ses Micropodia) et surtout des asques I-. DENNIS 1949:59 signale des poils lisses faisant référence au dessin de NANNFELDT 1932 : 270, fig. 43d qui a étudié le type.
Biblio: DENNIS 1981 : 175, fig. XXIV K ; ELLIS & ELLIS 1985:5 ; BARAL & KRIELSTEINER 1985:63 ; CANNON et al. 1985:50 ; VA.
Avec des poils lisses difficile d'en faire un Cistella !
Amitiés, Guy
Hans-Otto Baral,
09-04-2009 23:12
Re:Asco sur bois de Tilia
The remark "brown below" does not seem to fit to the present fungus. But from where do you have the statement that the hairs are smooth? Was it Raitviir?
Zotto
Zotto
Guy Garcia,
10-04-2009 06:53
Re:Asco sur bois de Tilia
DENNIS 1949:59 signale des poils lisses faisant référence au dessin de NANNFELDT 1932 : 270, fig. 43d qui a étudié le type.
Hans-Otto Baral,
10-04-2009 19:16
Re:Asco sur bois de Tilia
Yes, in comparison with the above row of typical Cistellas, C. parvula is smooth. So in the present concept of Cistella this is no Cistella, and also not the fungus of Enrique. But I would not wonder when sometimes molecular data would include smooth-haired species in Cistella.
Zotto
Zotto
Enrique Rubio,
10-04-2009 22:44
Re:Asco sur bois de Tilia
Merci beaucoup a les deux par votre aide. Many thanks again, Zotto.