21-08-2017 01:44
Ethan CrensonIn the Green Mountains of Southern Vermont, US.
17-09-2017 12:05
Rubén Martínez-Gil
Hola a todos. Subo unas fotos de una Rutstroemia?
16-09-2017 13:15
Lothar Krieglsteiner
... collected this week on a thick Picea log in
16-09-2017 23:47
Cvenkel Miranhttp://agrozoo.net/jsp/Galery_one_image.jsp?id_gal
17-09-2017 17:27
Nicolas VAN VOOREN
Bonjour.Je vous soumets cette belle petite pézize
16-09-2017 11:57
Lothar Krieglsteiner
... collected this week by Matthias Theiß during
15-09-2017 19:59
Chris Yeates
Bonsoir tousfollowing on from a recent find of Kar
16-09-2017 13:22
Lothar Krieglsteiner
... collected twice in the last week, both times o
16-09-2017 12:59
Lothar Krieglsteiner
... collected this week, on (another) Abies log, s
16-09-2017 13:31
Lothar Krieglsteiner
... at first glance looking the same way than the
possibly Pulvinula constellatio ? on moss debris
Ethan Crenson,
21-08-2017 01:44
Nicolas VAN VOOREN,
22-08-2017 07:53
Re : possibly Pulvinula constellatio ? on moss debris
The ascospores of P. convexella (= P. constellatio) are usually larger, i.e. 16–19 µm diam.
So probably another species.
So probably another species.
Ethan Crenson,
24-08-2017 06:39
Re : possibly Pulvinula constellatio ? on moss debris
Nicolas, thank you for your comments. There seems to be some uncertainty about the spore size for P. convexella/P. constellatio:
Pfister (Synopsis of the Genus): 18-20 (as P. convexella)
FoS: 13-17 (as P. constellatio)
Dennis: 13-15 (as P. constellatio)
Beug: 13-18 (as P. convexella)
Seaver: 15-20 (as Lamprospora constellatio)
In Pfister's Synopsis, P. convexella and P. cinabarrina match in apothecia color, spore features (other than size) etc. P. miltina is not described in full, referring to Rifai (1968) (which I do not have). But I have seen reference to P. miltina elsewhere (Bioimages UK) which seem to align with my collection well:
Apothecia: 3-7mm diam.
Ascospores: spherical, hyaline, smooth,14-16µm diam., with central mass of small oil drops.
Asci: 8-spored, apex not blued in Melzer's Iodine, upto 250µm long, but mostly smaller.
Paraphyses: 2µm diam, slightly wider at the tips, curved at the tips, mostly unbranched, with granular orange contents which turn green in Melzer's Iodine"
Would you say Pulvinula miltina in my case?
Pfister (Synopsis of the Genus): 18-20 (as P. convexella)
FoS: 13-17 (as P. constellatio)
Dennis: 13-15 (as P. constellatio)
Beug: 13-18 (as P. convexella)
Seaver: 15-20 (as Lamprospora constellatio)
In Pfister's Synopsis, P. convexella and P. cinabarrina match in apothecia color, spore features (other than size) etc. P. miltina is not described in full, referring to Rifai (1968) (which I do not have). But I have seen reference to P. miltina elsewhere (Bioimages UK) which seem to align with my collection well:
Apothecia: 3-7mm diam.
Ascospores: spherical, hyaline, smooth,14-16µm diam., with central mass of small oil drops.
Asci: 8-spored, apex not blued in Melzer's Iodine, upto 250µm long, but mostly smaller.
Paraphyses: 2µm diam, slightly wider at the tips, curved at the tips, mostly unbranched, with granular orange contents which turn green in Melzer's Iodine"
Would you say Pulvinula miltina in my case?
Thank you again,
Ethan
Nicolas VAN VOOREN,
26-08-2017 16:09
Re : possibly Pulvinula constellatio ? on moss debris
I don't think so. P. miltina is an Australian species and maybe an endemic species.
Lothar Krieglsteiner,
26-08-2017 18:24
Re : possibly Pulvinula constellatio ? on moss debris
Is there any modern key on Pulvinula, at least for Europe?
Best regards from Lothar
Elsa Sousa,
18-09-2017 01:13
Re : possibly Pulvinula constellatio ? on moss debris
Hi Ethan,
I found yesterday what I believe to be the same fungus, here in Portugal. I found it on a stream margin over soil attached to debris and the mesurements are exactly like yours!
I found this document, and I think this could be P. miltina too. Since it has been found on different places over the world, it is possible that it is just rarely collected.
The document - http://www.ascofrance.com/uploads/forum_file/Pulvinula-johannis-Sydowia-60-0247-0252-0001.pdf
Regards,
Elsa
I found yesterday what I believe to be the same fungus, here in Portugal. I found it on a stream margin over soil attached to debris and the mesurements are exactly like yours!
I found this document, and I think this could be P. miltina too. Since it has been found on different places over the world, it is possible that it is just rarely collected.
The document - http://www.ascofrance.com/uploads/forum_file/Pulvinula-johannis-Sydowia-60-0247-0252-0001.pdf
Regards,
Elsa
Nicolas VAN VOOREN,
18-09-2017 18:30
Re : possibly Pulvinula constellatio ? on moss debris
All these collections (of P. miltina) were reported before the use of molecular analyses, so I'm quiet sure that a modern review should provide another diagnostic.
Last weeks, I studied five different collections of Pulvinula (in fresh state) and I was unenable to provide a correct name, based on the known data on this genus :-(
Best.
Nicolas
Last weeks, I studied five different collections of Pulvinula (in fresh state) and I was unenable to provide a correct name, based on the known data on this genus :-(
Best.
Nicolas