18-05-2024 10:47
Anna KlosGoodmorning,We found this tiny ascomycete (max. 1m
10-05-2024 17:40
Anna KlosGood afternoon, Thursday during an inventory we f
17-05-2024 16:25
Pavel JiracekErioscyphella lunata, found on a fallen needle of
29-01-2022 21:44
Jan EcksteinGood evening, apothecia small, yellowish, 150-300
16-05-2024 11:19
Sylvie Le GoffBonjour, j'ai récolté sur une branchette de feui
14-05-2024 09:19
Hans-Otto BaralHi, I want to announce for next Sunday 17.00 middl
16-05-2024 11:49
Castillo JosebaDe ayer en rama de abetoNo se por donde mirarA ver
there is some uncertainty with identification of this species.
Large spores of this specimen coincide only with one species in Stomiopeltis (S. betula) though the host differs (Luttrell, 1946; Ellis, 1977). There is a species described from Ledum (S. ledi), but it has much smaller spores (Remler, 1979). It could be possible to consider S. versicolor as well, which also was collected on Rhodod. hirsutum. But it was later transferred to Microthyrium and in "British fungi keys" mentioned with spore appendages. Therefore i inclined to S. betula. Probably you will have other suggestions?
Nina.
Thyriothecia scattered on upper leaf side (fallen leaves of Andromeda polifolia), dark brown, 150-200 mk in diameter, with visible pore.
Scutellum from irregular lobed cells, in some ascocarps (probably later in development) cells to the edge become more elongate and radially arranged; asci 37–44 x 8–10 mk; pseudoparaphyses filiform, about 1.5 mk broad; spores fusoid, with many oils, slightly heteropolar, with one weak septa, some curved, 15 (13–18) x 3.2 (2.5–3.9) mk (n=23, measurements in dead state).
I only know S. betulae on Betula on which it is very common here. My measurements are always towards the top of the range given by Pamela Ellis - see attached image. I think your measurements are too small for S. betulae - perhaps you have an undescribed taxon. Do you have any macro-images?
Cordialement
Chris
thank you for showing me S. betulae. It looks more robust, and yes, spores in my specimen are smaller. I did not make macro-photos because it is barely seen by naked eye, very scattered dots on leaves, better to use lens for them ). I will collect more material of this group to make clear picture later, now will left it under-identified.