21-11-2025 11:52
Jean-Luc RangerBonjour à tous, on voit toujours 2 espèces areni
21-11-2025 10:56
Christopher Engelhardt
Very small (~0,5 mm) white ascos, found yesterday
14-11-2025 16:26
Marian Jagers
Hello everyone, On dead wood of Cytisus scoparius
17-11-2025 21:46
Philippe PELLICIERBonjour,Récolté sur bois pourrissant de feuillu
20-11-2025 14:14
Mick PeerdemanFound on the leaves of 'Juglans regia' in the Neth
20-11-2025 13:07
Mick PeerdemanIn January i found these black markings on the dea
Stictis species determinations
Danny Newman,
23-12-2013 23:42
Hello AscoFrance,I wish to apply responsible names to the observations of Stictis over at MushroomObserver. The ascomycete references consulted in working up this observation:
http://mushroomobserver.org/156118
only contain 2-4 species, whereas Sherwood's research treats dozens. I have read Hans' laments of the difficulties of this genus on other forum posts. My impression is that no Stictis species is identifiable without microscopy, and that variables present in preservation and analysis (ie: vital vs. non-vital taxonomy) often make species determinations difficult to impossible even with microscopy. That being said, I question whether any of the following observations:
http://mushroomobserver.org/observer/observation_search?pattern=stictis
can be confidently identified to species.
As a side note, I'm curious to know if PDF copies of Sherwood's Ostropalean articles in Mycotaxon are available.
Any and all help, as always, is greatly appreciated.
Happy Holidays,
-Danny
John Plischke,
24-12-2013 03:40
Re : Stictis species determinations
Hello Danny,
I will send you the article. I may have a few microscope photos of the ones I found here in PA, If i can locate them I will put them on mushroom observer.
Hans-Otto Baral,
24-12-2013 09:05
Re : Stictis species determinations
Hi all
yes, I am sure that we will not proceed unless we do a detailed study on every collection, including sections of the marginal lobes, detailed evaluation of iodine reaction (Lugol, different colours when iodine enters the hymenium), living spores with depiction and measurements of individual cells and their contents, ascus croziers, paraphysis apices.
In the case of Stictis (121912), I feel that the cystidia and spores come from the big basidiomycete associated with the Stictis.
Zotto
yes, I am sure that we will not proceed unless we do a detailed study on every collection, including sections of the marginal lobes, detailed evaluation of iodine reaction (Lugol, different colours when iodine enters the hymenium), living spores with depiction and measurements of individual cells and their contents, ascus croziers, paraphysis apices.
In the case of Stictis (121912), I feel that the cystidia and spores come from the big basidiomycete associated with the Stictis.
Zotto