Beiträge von Steve_mt

OK Stefan, Thanks! under the stereo microscope at x16 and x 40, I did not see any pruinosity or cystidia, just a glabrous smooth stipe.
I think it is saccharinus. The veil is clear hyaline-white as sugar Micaeus is usually a bit beige

L.G.Stephen

On dead trunk of Q. ilex. Which Coprinellus please? Should be between micaeus and saccharinus!

I found some 5 polypores attached to the bark of living Quercus ilex (Holm oak) trees in a park, somewhat damaged by Xmas lights decorations. The core is composed of 2 (or 3) layers. The hymenophore is soft. I managed to see few spores too, apparently thick walled. The context stains deep reddish-brown with 4% KOH. Could you help in the ID please?. Young Inonotus (Inocutis) dryophilus ?

Is anyone familiar with yellow or bleached Parasola sp I found in calcareous limestone soil, exposed to sea rush, terrestrial and close to low weeds and grasses? The spores are subspherical with a tapering end, pore present. Cheilocystidia abundant, inflated ellipsoid or subspherical hypha, rather variable. Pilleipellis sphaeropedunculate hyphae. Suggestions always welcome.

Karl, I was reading the note on Atlas grzybów Polski - Mushrooms and Fungi of Poland stating:

 Romagnesi (1941: 126) described C. curtus Kalchbr. f. macrosporus which has somewhat larger spores (10.7-14.7 x 6.5-8.5 µm). M. Lange & A.H. Smith raised this taxon to the rank of species, naming it C. heptemerus (see under that name).

The spores with average length 13.0 um and the larger spores reaching 14.5 um I was thinking if to choose C. heptemerus, but then when I saw the images of the pileocystidia and caulocystidia lacking the capitate head I firmed my opinion on C. curtus. Yet the difference of these cystidia are not highlighted in the remarks/distinction comments on that site. Anyway this finding is clearly C. curtus - thanks for your confirmation

Hi Ulla, thanks for your suggestion. I always thought ofP. cinereum as with a gregarious habit, but I saw some images with vermicular habit now.

Physarum cinereum Slime Mold - Stock Image - C007/6152 - Science Photo Library

I will check and revert back

OK Bjorn - thanks for the small statistics lecture and sharing yr knowledge. I know a bit more behind these formulas now. Cheers!

Hi, I found this delicate mushroom in calcareous soil with grasses and sparse weeds close to manure. The pink-gilled and free gills, the smooth pileus and esp. the prominent Volva indicates Volvopluteus or Volvariella. The size of the pileus is about 18mm across and the individual is 30mm tall. I excluded V. gloiocephalus for the small size. I am a bit left without many options here. The cap had fine greyish-brown radial striations (or fibrils). Spore print light brown. Pileipellis a cutis of cylindrical cells of various widths ending with slightly swollen ends. I examined a 3-day old specimen and the lamella were a bit decaying out but spores ovate and with a dextrinoid wall (if I am judging right), basidia pretty large 2 and 4 spored and Cheilocystidia were not numerous but I saw a few that are utriform and short, not much larger from the

What else it could be from gloiocephalus (which is not)?

By using logic sense I would use the one which has the most species in your region of study. Saying that they are all outdated books and in mycology (unlike plants) they lose a lot of value regards identification, validity, and esp. nomenclaure. Yet they are always better than nothing at all. Roger Philips is a well known mycologist.

I don't know if I have mentioned it, but between the two, I chose populin because it is most recorded so the odds I found something extremely rare recorded from Japan is too much unreal and not plausible. As you said, these might even be the same species and define just a bit of variety within the species. Not even the monograph was able to tell apart with any confidence. Thanks for all your correspondence about this matter

1. The interval [Min, Max] is centred around the average of the sample and there is a 95% probability that a random spore will have a size inside this interval.So 95% of the sample have spores within this range; some (5%) larger or smaller

OK

2. The interval [m, M] tells us that there is a 95% probability that the average spore size is inside this interval.

This I haven't understood is it like a range of an average? ??

I was not aware there is a menu with the right mouse button, but both classical and statistical use the formula

(Min) Range (max) while I wished (min) mean (max).

and thank you for confirming Karl

I took that sect. from Melzer key... maybe I have an old version ?

Coprinopsis cothurnata ?

Coprinopsis cothurnata (Rotfüßiger Schneetintling) – Fundkorb

Coprinopsis filamentifera ??? (I dont think so)

This is another specimen found on horse dung, this time a Coprinopsis (sect. Picacei ) for its tubule-like hyphae in the veil on the pileus. As most Coprinus sl specimen do, my specimen got deliquescent and at home, I had no good material to work with. In this case, I could not investigate the Basidia, Cheilocystidia and the Pleurocystidia as the lamellae were gone jelly.

Spores more or less ovoid, outline a bit like carved rather than perfectly round, presumably thick-walled, not dark brown, with pale spores also present in a mature collection, germ pore central wide and many spores had already a long germ tube even if they were still in their parent fruiting body. Me = 7.8 × 5.3 µm ; Qe = 1.5

Last details, I saw a few clamp junctions in the veil elements and pileipellis seems to be very slender parallel-bundled hyphae about 4um wide

Zitat von ogni volta

I just had wished you let us participate a little of your knowledge and tell Steve something like "look thats the reason why these limits are correct even if they seem large" or at least "read this chapter on statistics in Wikipedia it might help you understand the term".

Kind regards, Ingo

It is a bit true Ingo. Sometimes, I ask for help and instead of two hands or a hand I get a finger, and that could sometimes be also good enough to help myself and try to understand. Usually, I ask for the second finger (as I did here) and hope I get some reply to my simplified hypothesis. Thanks for your support

Is this Physarum bitectum simply for its habit and habitat or I should investigate for other species.

As you know these white Physarum requires examination of the Capillitium, Columella and Spores. Ph. album and pusillum look like that but other look-alikes also do.

Good morning,

I have found this cute Coprinellus on horse dung on lawn under maquis trees which when young they are 2 mm orange-brown bodies and then develops into a 5 - 10 mm gray pileus with puntate veil remnants that are orange-brown. When young the veil is in isolated patches These are composed of globular cells. I should be in the genus Coprinellus (? Domestici)

The spores are 13 x 8 um (mean) dark brown with a tiny pore. I thought that I saw an oblique pole at the germ pore or it is just a bit eccentric. Another interesting feature is the presence of caulocystidia (also seen in macro pics) which have a long neck and a nice rounded head. I have seen these in the pileus too. The pileus was deliquescent and was not able to see Cheilo/Pleuros.

I am gonna suggest Coprinellus curtus (KALCHBR.) VILGALYS, HOPPLE & JACQ. JOHNSON although the spores are just not too large. It really matches to this:

Coprinellus curtus (Kalchbr.) Vilgalys, Hopple & Jacq. Johnson 2001 - 115305 - Biodiversidad Virtual / Hongos y Líquenes

Thanks Bjorne. The literature in the manual is quite heavy for me to understand and the french - English translation is not so good for this technical doc.

the format a [b ; c] z states that the min-max range is b - c for covering 80% sample(? did I understand well?) and a - z (mini / maxi) is more or less an estimated 100% range. Hence with a small sample size, the estimation on the mini/maxi may appear out of proportion.

It would be great if Pixmetere can allow formatting of the formulas. I really like a simpler (min-) mean (-max)

LG

Steve

Dear Ingo,

Thanks for going into this and writing back. I greatly appreciate you did this and have some answers. So as I see, these 'erroneous limits' (Min-Max) are a result of measuring a few spores but should be more reliable when measuring say > 20 as I usually do. Hmm, it is strange that it gives this weird reading to be honest! They should fix it without doing 'assumptions' and error corrections. Knowing this, it is a bit reassuring that the formulas by Pixmetre are fine to report in papers/literature.

With regards your other point, I was also noticing that spores located at about 10% border of the image are a bit stretched out giving false larger sizes. I hence measure spores around the centre and avoid the margins. I take several images when few spores are present.

Thanks Ogni

Zitat von thorben96

Hi Steve,

interesting question, because i don't know anything about C. dennisii and i'm not familiar with this genus.

If you are interested about more details you can contact Zotto on Ascofrance or E-Mail.

I haven't count the septa from the paraphyses.

best regards,

Thorben

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I got this ascomycete identified on Ascofrance too and everything seems to match except the number of speta of the paraphyses. The description says 2, I had 4. On the other hand this is never mentioned to be important character.

Some info dear friend

Hi, I am studying a similar (probably same) species ... Can you say how many septa the paraphyses have? Note there is also this ambiguous C. dennisii (GBIF: one occurrence in Japan, but recorded/described from central Europe).