16-04-2026 22:09
Buckwheat PeteHello, I'd like to ask about this older specimen:
14-04-2026 05:32
Ethan CrensonHi all, A few weeks back a friend pointed out som
12-04-2026 15:52
Gernot FriebesHi,I'm looking for help with this anamorph collect
15-04-2026 19:33
Fátima Durán ManzanequeHi!! I need help, I found this Ascomycete but I d
14-04-2026 21:52
Gernot FriebesHi,found on dead leaves of Carex elata. Conidia: 4
14-04-2026 20:31
Gernot FriebesHi,can this be Psilachnum lateritioalbum on Phragm
12-04-2026 17:56
Hardware Tony
Found on dead stems in February earlier this year
12-04-2026 12:22
William Slosse
In a dune grassland in Oostduinkerke (Belgium), on
11-04-2026 15:45
Zuzana Sochorová (Egertová)
Please, could anyone send me this paper?Moyne G.,
11-04-2026 13:34
Artem PtukhaHello, I am seeking assistance with the identific
Hello,I made a loan of a collection of Microstoma from South Korea.
For the beginning, I have used the key to the genus by Tie-Zhi et al. 2018 - it´s in Chinese, so I translated it to English using Google Translator - of course this can have some limits, nevertheless, I led me to M. floccosum.
However, in 2021, another species which could be a good candidate was described from Japan - M. longipilum.
According to Tochigara et al. 2021, the main differences should be the colour of apothecia (scarlet or dull red in M. floccosum, salmon pink to pale orange in M. longipilum) and lenght of hairs (but this is a bit unclear to me: "over 1000 micrometers" in M. floccosum, while "up to 3000 micrometers, usually over 1500 micro" in M. longipilum). Some sources give only "up to 1000 micrometers" for hairs in M. floccosum.
I am attaching photos of dry apothecia - in them, I would say the colour fits better for M. longipilum. Also the aggregared growth would be OK for M. longipilum. Note the brown hyphae at the base of apothecia. A photo of fresh apothecia, taken by the collector, can be found in this presentation, in time 28:40: https://www.youtube.com/watch?v=WmtAD5YM4LA
Hairs are often over 1500 micrometers, the longest hair I measured was 1875 micrometers long.
Ascospores in the South Korean collection were (20.2)21.7-26.5(28) × (10.8)11.6-12.5(13.1) µm, Q = 1.8-2.4, n = 55. Me = 23.9 × 12 µm; Qe = 2 (but this cannot help too much, because size of ascospores is overlapping in the two species). The have no apiculi.
What´s your opinion? There are many photos of M. floccosum in the internet, some also having pinkish colour, but I think it cannot be excluded some are wrongly identified.
Zuzana
About the colour, of course, the density of carotenoid pigments can vary and change the global aspect, including with exsicata.
Maybe the biogeography could also help. M. floccosum was first discovered in North America, so Asian collections should be revised. The phylogeny published in the paper introducing M. longipilum shows clearly that Japanese and Chinese collections named M. floccosum belong to a sister clade of North American collections.
It seems it will not be possible to make a clear conclusion without sequencing.
I should have made this loan three years ago, and wouldn't have problems with identification like now ????
