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Castillo Joseba
Me mandan el material seco de Galicia (España), r
Apothecia have a yellow-orange disc up to 1.5 mm across. They have a fairly long white stalk. Excipulum is composed of thin-walled prismatic cells.
Asci are 95-110 x 7-9 µm. I'm unsure whether they have croziers. Pore at ascus tip stains blue with iodine. Spores are 17-25 x 3.5-4 µm, with a high oil body content (ca 70%). They are rounded at both ends (not scutuloid).
Paraphyses are ca 2 µm wide and are full of small oil bodies.
Using Declerq's key to Hymenoscyphus in Belgium it seems to be H. menthae. The images of H .menthae here also seem like a good fit.
I'd be grateful for any thoughts on my identification.
Regards
Marcus
it is clearly H. menthae. Easily recognized by multiguttulate homopolar spores of rather such large size.
If you don't mind, you can give me the collection data and I would take your find into my still not finished paper .
Zotto
Hi Zotto
Many thanks for your confirmation of my collection of Hymenoscyphus menthae.
Collection details are as follows:
On dead stems of Lythrum salicaria in rank wetland vegetation. 0 metres altitude. Nene valley, Peterborough, England, UK. Grid reference TL18009819. Collected by M. Yeo, 1 September 2013.
Marcus
Zotto
Marcus
Ah, no, in Sheffield in 2011 we had it also.
Will you preserve it and do you give a herbarium number?
Marcus
I hope it is OK to add to this thread.
I found a yellow Hymenoscyphus on a woody herbaceous stem in the border of my garden in Hampsire, UK. I also used the key "Hymenoscyphus in Belgium" and believe that it is likely to be Hymenoscyphus menthae - the spores are as Zotto describes in the post above.
The yellow discs were 1-2mm. The stems just under 4mm long, slightly downy and broadening at the base. The asci arose from simple septa and the spores had rounded ends with multiple small guttules, hyaline and aseptate av. 19.7 x 4.1 µm. The paraphyses were filled with small roundish reflective particles.
I would appreciate your comments if you see this Zotto - and you mention a paper you were finishing, is it published now?
many thanks.
David Kelly
great, no doubt it is this frequent species. If you tell me the town and date I will take up this collection. But my article appeared in 2015, and it has also some British records.
Tell me your address and I will send you.
Zotto
p.s. I was thinking you used the very recent thread of the first record from Scandinavia.
I will email you the collection details and my address.
Regards
David