Accès membres

Mot de passe perdu? S'inscrire

21-02-2020 20:33

Rubén Martínez-Gil Rubén Martínez-Gil

Hola a todos. Subo unas fotos de un Ascobolus que

27-02-2020 12:36

Juuso Äikäs

These grew on a pile of moose or deer dung. The ap

27-02-2020 09:49

Castillo Joseba Castillo Joseba

me mandan el material desde Galicia,  recolectado

25-02-2020 14:33

Mirek Gryc

HiSeveral creamy sporocarps quite small. Maximum d

27-02-2020 11:01

Andreas Gminder Andreas Gminder

Dear collegues,since I found many collections of S

23-02-2020 11:15

William Slosse William Slosse

Hello Forum, on 14/02/20 I again collected a coll

25-02-2020 21:42

Josep Torres Josep Torres

Hola.Ejemplares fotografiados el pasado domingo br

25-02-2020 20:07

Thorben Hülsewig

Hi there, i found this asco on heracleum giganteu

26-02-2020 10:46

Castillo Joseba Castillo Joseba

me envian material seco de esta especimen recolect

25-02-2020 16:24

Riet van Oosten Riet van Oosten

Hello, Found by Laurens van der Linde, Febr. 2020

« < 465 466 467 468 469 > »
Stictis species determinations
Danny Newman, 23-12-2013 23:42
Danny NewmanHello 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
John Plischke
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
Hans-Otto Baral
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