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Mot de passe perdu?

03-10-2024 20:56

Orange disc, Melastiza flavorubens

Margot en Geert Vullings

These orange discs were found in September on mois

04-10-2024 17:08

Orange disc, Melastiza flavorubens?

Birgit Lüthje

I just found a very similar ascomycet on a heap of

05-10-2024 15:55

Humaria hemisphaerica

B Shelbourne

B Shelbourne

• Macro and habitat suggest Humaria hemisphaeric

01-10-2024 17:02

Chlorociboria aeruginascens

B Shelbourne

B Shelbourne

• Habitat and macro suggest Chlorociboria.• P

01-10-2024 16:15

Orbilia from Germany (Schwäbische Alb)

Lothar Krieglsteiner

Lothar Krieglsteiner

.. on deciduous twig, on and near old specimens of

01-10-2024 11:14

Michel RIMBAUD

Bonjour,La semaine dernière en réoltant des myc�

30-09-2024 22:15

Hairs on Betula bark

Alan Smith

I found a 'forest' of hair-like structures on the

29-09-2024 13:17

Ciboria batschiana

B Shelbourne

B Shelbourne

• Macro and habitat suggested Ciboria, and C. ba

22-09-2024 20:24

Robin Isaksson

Robin Isaksson

Dear all, I did found this one on on S. acauli

08-09-2024 21:31

Possible Rutstroemia sydowiana

B Shelbourne

B Shelbourne

• Stromatised substrate and macro like genus Rut

Pulvinula miltina possible?

Juuso Äikäs, 13-07-2020 12:08

Yesterday I found some Pulvinulas growing on clay-rich soil near a pond.

I thought the species might be Pulvinula convexella (= P. constellatio), but the spores are fairly small compared to some sources (although there seems to be broad variety between different sources). I'm thinking about the possibility of P. miltina.

I measured 15 spores from a spore print in water and the diameter was 14-15 microns.

There are many fresh expert approved sightings of P. miltina in the Danish svampe.databasen.org. In GBIF there are sightings from European countries and Australia and New Zealand. But I also found a comment by Nicolas Van Vooren on this forum from few years ago that P. miltina is an Australian species and possibly endemic.

So has there been some new study that has cleared this matter or is there still confusion about this species?

Gilbert MOYNE, 13-07-2020 12:30

Re : Pulviluna miltina possible?

Avec des spores de 14-15 µm, des paraphyses qui ne semblent pas divisées au sommet, je pencherais pour Pulvinula globifera
Gilbert

Lothar Krieglsteiner, 13-07-2020 12:43

Lothar Krieglsteiner

Re : Pulviluna miltina possible?

Hello Gilbert and others,
does anywhere a key about this genus exist? - a key that contains most taxa and is to some extens "modern"?
Best, Lothar

Enrique Rubio, 13-07-2020 12:51

Enrique Rubio

Re : Pulviluna miltina possible?

Hi Juuso

Have you tried if the asci have croziers?
It is a very important character in this genus.
Enrique

Gilbert MOYNE, 13-07-2020 13:19

Re : Pulviluna miltina possible?

Une clé dans un article de Pfister dont je n'ai plus la référence en tête.
Gilbert

Martin Bemmann, 13-07-2020 16:07

Martin Bemmann

Re : Pulviluna miltina possible?

Pfister's work on Pulvinula is here:

https://www.biodiversitylibrary.org/item/31896#page/1/mode/1up

Regards

Martin

Gilbert MOYNE, 13-07-2020 17:44

Re : Pulviluna miltina possible?

Merci Martin

Gilbert

Juuso Äikäs, 13-07-2020 19:11

Re : Pulviluna miltina possible?

Thanks for the replies and the link. The sample is already drying but tomorrow I'll take a better look at the asci and paraphyses and post some new pics.

Juuso Äikäs, 14-07-2020 11:18

Re : Pulvinula miltina possible?

I measured a few asci and they were 195-225 x 16-17 µm. The ascus bases are tapering and with croziers. At least some paraphyses are branched and up to 2.5 µm thick.

I checked the article and this doesn't seem to fit any species fully. P. convexella and P. miltina seem to be closest. The former should have bigger spores and asci and the latter shouldn't have croziers and should have an abrupt base (however the article did mention that in some specimens of P. miltina there were occasional croziers).

So, still confused :).

Enrique Rubio, 14-07-2020 11:30

Enrique Rubio

Re : Pulvinula miltina possible?

Hi Juuso
I think Pulvinula miltina, described with or without croziers, fits well with your harvest (YAO & SPOONER, 1996),(RIFAI,1968).

Juuso Äikäs, 14-07-2020 11:48

Re : Pulvinula miltina possible?

Thanks for the opinion. This might be an interesting collection if this is the case.

Enrique Rubio, 14-07-2020 12:55

Enrique Rubio

Re : Pulvinula miltina possible?

Some months ago we have collected Pulvinula orichalcea [= Pulvinula globifera (Berk. & M.A. Curtis) Le Gal s. Le Gal], a taxon with absolutely no croziers. This finding will be 'published soon in the spanish journal Errotari.
I would advise you to keep looking at the base of the asci to try to see if, it looks like in all your photos, the asci have croziers.