Adio Dirk,

It exist a sort of complex in T. gregaria. Some collections with smooth spores, some finely verrucose and some with little warts in the middle of fine ponctuation. This last seems to correspond to T. gregaria var. intermedia (Le Gal - 1937).
And T. pseudogregaria is a species with an ornementation with warts, distinctly rounded and spores larger than T. gregaria.

Until someone sends you article, I attach here two photos of sporogram : T. gregaria (finely ponctuate) and T. pseudogregaria (distinct warts) of personal collections.
It's just my opinion, based on Bronckers article. It's difficult to make more without study of typus and overview of opinions of the primary authors.

Perhaps more information with others...
Beñat

Voici un pDF de l'article demandé.
Amitiés
gilbert

Hi,

I've never had problems to identify my collections as either T. gregaria (ascospores smooth or delicately rough) or T. pseudogregaria (ascospores with more distinct, rounded warts). Beñat's photos show the differences quite nicely. Dirk, do you maybe have photos of your intermediate collections?
T. pseudogregaria loses the ornamentation of the ascospores in KOH which makes it quite difficult to distinguish this species from T. gregaria when not examined in water.

Best wishes,
Gernot

dear gilbert,

now i have a clearer opinion on t. pseudogregaria!
merci beaucoup!!

dirk

salut benat, hallo gernot,

merci pour les spores-ornamentation, benat!
now i can say my second collection is not pseudogregaria, because it is also very fine-warted (comparable to the ornamentation of peziza arvernensis f.ex.), like gregaria has to be, often nearly not to see. my problem with the collection are three aspects:
1. the hairs are light-brown (not dark-purplish-brown as i know from typically t. gregaria). 160-250 long.
2. the spores are subfusoid-elliptical (22 x 10-11 (12)) and fit from size and form very good to that what bronckers describes and draws for pseudogregaria. but the ornamentation is much too weak in my collection
3. nearby to this collection i found typically dark-haired t. gregaria with really different, narrow and fusoid spores (24-25 (26) x 12)

at first i thought, this could be paratrichophaea boudieri, but the spores are full of little oil-drops at maturity and with two medium-sized drops when young.
here is a picture: should this be in the variation of t. gregaria? that seems courious to me ...

best

dirk

Voici également un article avec une description de T. pseudogregaria, paru dans le numéro 5 de la revue de l'AMFB (association des mycologues francophones de Belgique) de 2012.

Amitiés,
Daniel