24-03-2024 08:27
Thierry BlondelleHiOn Hedera helix fallen branchEcological habitat:
26-04-2024 10:07
Mathias HassHello, Does anyone know what this is? Found on J
24-04-2024 21:54
éric ROMEROBonjour, J'ai trouvé ce Lasiobolus sur laissées
23-04-2024 15:18
Lothar Krieglsteiner... but likely a basidiomycete. I hope it is o.k.
23-04-2024 13:17
Edouard EvangelistiBonjour à tous, Je viens de récolter ce que je
23-04-2024 21:49
Ethan CrensonHello all, A friend recently found this orange as
22-04-2024 11:52
Zuzana Sochorová (Egertová)Hello,I made a loan of a collection of Microstoma
11-01-2022 16:36
Jason KarakehianHi does anyone have a digital copy of Raitviir A (
22-04-2024 20:38
Miguel Ángel RibesGood afternoon.Does anyone know this anamorph?It g
This species quite often met at dead twigs of dwarfshrubs (Chamaedaphne calyculata, but probably others as well), in bogs. I have only one collection, though. It was without clamps; this feature reported by Raitviir (2002, A revision of the genus Dasyscyphella?) "for all Eurasian collections", but "in American collections they originate from croziers" (var. uncinata Raitv.).
All characters fit well with description of D. cassandrae var. cassandrae, except spore septation. I see clear septa already inside the asci; but Raitviir described them aseptate.
I think, what i 've seen it is real septation? -and if so, it must be underdescribed character of this species?
Apothecia cupulate, stipitate, receptacle to 1 mm in diam, stipe to 1 mm high, all frb up to 1,5 mm; hymenium yellowish, outer sirface pure white; outer surface and stipe densely covered by hairs; edge with long hairs; growing scattered or by several nearby.
Excipulum from textura porrecta in stipe (hyphae near 4 mk broad), textura prismatica at flanks (cells ellipsoid, with thickened walls, 20-30 x 6-8; hairs cylindrical, up to 150 mk long, rough at base, smooth in upper part, 4-6 segmented, the base slightly broader (3) and tip slightly enlarged, the narrowest part under tip beeing near 2; asci clavate, tip obtuse-conical, sometimes with protruding pore site, without clamp, pore euamyloid, with 8 interwoven spores collected in upper part, 92,5 (80-116) x 10 (8-11); paraphyses cylindrical, scarsely branched, segmented, with vacuolar content (vital, water); 2 mk broad, not exceeding the asci; spores vermiform, curled in asci, without or with 3-5 septa (already inside asci), 52 (44-67) x 2,4 (2-2,6) (N=14) (real length some longer since measurements done in curved state).
Au sujet du cloisonnement des spores, lire la diagnose originale reproduite dans la revue Hedwigia 1899 (38) : 10
http://www.biodiversitylibrary.org/page/507326
"... deutlicht septirt, zuweilen auch dreizellig, ..."
Amitiés, Guy
DENNIS R.W.G. 1972 The type species of Dasyscyphella Tranzschel. [cassandrae, corticola]. Kew Bull. 27 2 273-274.
Si vous n'avez pas cet article, je peux faire une copie ce soir.
So, in the original description by Tranzscel spores "filiform, usually curved, sickle-shaped, in the middle clearly septate, sometimes 3-celled, hyaline". This matches my observations well (mine up to 5-celled). For some reason Raitviir has omitted this character in two his works on the genus (1970, 2002).?