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Tarzetta catinus?
Viktorie Halasu,
14-04-2016 10:55
Hello,I would like to ask your opinion on this one: Collected in may 2015, warm deciduous forest, basic soil. Apothecia 3-5 cm in diam., all with distinct, big and perforated stipe. Young ascomata semiimmersed in soil, then cupulate, old ones cracking to lobes (Geopora-like). Receptacle lightly pustulate. Many fruibodies are perforated on the bottom of apothecium.
Medúlla of t. intricata, cca 330-370 um, ectal excipulum of t. angularis, up to 140 um, at the surface becoming t. globulosa, covered with sparse hairs. Hairs hyaline or yellowish, flexuous, about 50-135 (190) × 7-10 um, obtuse, 1 um thick walls.
Paraphyses not exceeding asci, straight, branched, most of them are slightly clavate, sometimes more irregularly enlarged or antler-like branched, but not much.
Sp. ellipsoid or fusiform-ellipsoid, most of them with rather pointed poles, (20) 21,1–24,3 (25,5) × (9,8) 11–12,5 (13,3) um, probably with 2 LBs and some small ones when alive, uninucleate, carminophile.
Based on microcharacters I think it is Tarzetta catinus. But I never saw such a distinct, almost Jafnea-like stipe on Tarzetta. Something similar is in this Rubén Martínez Gil's collection: http://ascofrance.fr/search_forum/30049 , but not so much developed. If my determination is correct, is this feature common for T. catinus, or rather result of some environmental conditions?
Kutorga Ernestas,
14-04-2016 11:15
Re : Tarzetta catinus?
Hello,
Genus Helvella should be considered.
Ernestas
Genus Helvella should be considered.
Ernestas
Nicolas VAN VOOREN,
14-04-2016 11:16
Re : Tarzetta catinus?
The species of Jafnea have ornamented ascospores and I supposed those from your collections are not (check in CB). True hairs are also present at the margin.
So the genus Tarzetta seems the good genus for your collection. Due to the rather large size of apothecia, you should investigate Tarzetta spurcata.
So the genus Tarzetta seems the good genus for your collection. Due to the rather large size of apothecia, you should investigate Tarzetta spurcata.
Viktorie Halasu,
14-04-2016 11:26
Re : Tarzetta catinus?
Hello,
thank you both for answering so quickly.
Ernestas: As far as i know, Helvellas should have only one big LBs, already in living state, and four nuclei in spores - that's why I excluded it. But yes, when searching for a suitable genus, the stipe made me consider Helvella as well.
Mr. Van Vooren: I saw some pustulate ornamentation, but in water only. In LACB or IKI it "disappeared", so I was not sure, if it weren't just the small guttules inside. I'll try to check again.
edit: Häffner (1992) writes he saw tuberculate ornamentation in T. galliardina, catinus, cupularis. But this is not so dense, as he illustrates it.
Tori
thank you both for answering so quickly.
Ernestas: As far as i know, Helvellas should have only one big LBs, already in living state, and four nuclei in spores - that's why I excluded it. But yes, when searching for a suitable genus, the stipe made me consider Helvella as well.
Mr. Van Vooren: I saw some pustulate ornamentation, but in water only. In LACB or IKI it "disappeared", so I was not sure, if it weren't just the small guttules inside. I'll try to check again.
edit: Häffner (1992) writes he saw tuberculate ornamentation in T. galliardina, catinus, cupularis. But this is not so dense, as he illustrates it.
Tori
Iglesias Plácido,
14-04-2016 11:42
Re : Tarzetta catinus?
El aspecto macro es de Tarzetta spurcata.
The aspect macro is of Tarzetta spurcata
The aspect macro is of Tarzetta spurcata
Nicolas VAN VOOREN,
14-04-2016 11:51
Re : Tarzetta catinus?
You have to consider ornamentation on ejected mature ascospores. On your last photo, we only see fused guttules and droplets (inside the spore).
In my opinion the spore size and shape do not fit very well for T. catinus, more in agreement with T. spurcata (see for example the Boudier's plate 337 in his Icones, under the name Pustularia ochracea).
In my opinion the spore size and shape do not fit very well for T. catinus, more in agreement with T. spurcata (see for example the Boudier's plate 337 in his Icones, under the name Pustularia ochracea).
Viktorie Halasu,
14-04-2016 21:38
Re : Tarzetta catinus?
So, no ornamentation found (except for that droplets that I mistook for ornamentation, I apologize).
Thank you, Mr. Van Vooren, T. spurcata (= ochracea) sure fits better than Boudier's table of T. catinus. I re-checked the paraphyses' tips and they too point rather to T. spurcata, although they are not so much branched, as in Harmaja's illustration.
Thank you, Mr. Van Vooren, T. spurcata (= ochracea) sure fits better than Boudier's table of T. catinus. I re-checked the paraphyses' tips and they too point rather to T. spurcata, although they are not so much branched, as in Harmaja's illustration.
Nicolas VAN VOOREN,
15-04-2016 15:41
Re : Tarzetta catinus?
Thanks for these photos of paraphyses. The "branching" character of paraphyses top is ± variable.
So I think you can label your nice collection T. spurcata!
So I think you can label your nice collection T. spurcata!
Viktorie Halasu,
15-04-2016 17:22
Re : Tarzetta catinus?
Thank you very much!