Beiträge von Steve_mt

Quick reply after some further examination. 1 and 2 are different, the pores are different and also 1 has a pleasant aromatic scent, like resin of pine. !!! So I will report on these two Boletes independently shortly.

Dear friends,

I have examined this fungus, and it is turning out to be another interesting species.

• The spores are dark reddish-brown, ovate-ellipsoid (convex in lateral view) with a well-detectable (but not highly distinct) central germ-pore. Spores measuring Me = 7.8 × 5 µm ; Qe = 1.5 Range: [6.9 [7.6-7.9] 8.6 × 4.5 [4.9 -5.1] 5.6 µm] N = 37
• The pileipellis is a Hymeniderm-epithelial layer of subspherical hyaline smooth-walled hyphae
• Above there is a pigmented layer where hyphae have thick encrusted walls. I did not get a good picture of this layer but some cells are cystoid, there are elongated hyphae. Yet the incrustations are evident.
• The cystidia are narrow utriform to utriform with a thick covering of crystals on the obtuse-rounded apex. 38-44 um long. It stains very strong in CongoRed.
• Cheilocystidia are present as a dense row on the gill edge giving the gill a white-edged appearance.
• Unfortunately, I have not yet tested for pleurocystidia.
• I have detected a clamp junction in the veil? (supracuticle layer)

I decided to exclude Psathyrella because the stipe did not break with a snap - and saw the white edges on the lamella sides (not that strong to be honest). But I have not studied this collection in detail and I try today . The cheilos are very interesting !!! Yes P. cinctulus, sorry for the typo. I do my best to finish my ecological report and I come back with details.

Favouring yr point, yesterday 11pm while half asleep I was reading about the Panaeolus spp from Fungi d'Italia and thought the spores are too large and robust... so yeah genus must be reconsidered. To be continued my friend - THANK YOU!

I am so glad to encounter what I think is a Panaeolus sp. since these are quite rare to find her in Malta. I show you the micro tonight (spores, pileipellis, veil elements or pileocystidia (?) and cheilocystidia). Spore print charcoal black, spores with a pore and stipe does not break with a snap (so I went off from Psathyrella). The edges of the lamellae are white too, leaving Panaeolus as a good candidate. P. cingutulus was my first quick guess but let's be patient and build up slowly.

It is a nice mushroom. The spore print was so delicate and beautiful, formed even after 2 hrs of standing.

Problem is that it i so hard to find the spores and they are 2-3 um! Yet, being the type of not to surrender easily, I will giveit a try. My plan was to visit the site next month and try to find more specimens. I keep updating this finding - thanks

Dear Pablo, I also arrived at the conclusion that the partly or mostly red-stiped images with a concave hymenophore refer to Xerocomellus redeuilhii - I never seen as big as these and 75% red stipe, si I was confused! Good to learn more!

Collection 2 I was thinking on the lines of Hortiboletus rubellus but your hint on Hortiboletus engelii is very valid since this is a Quercus specialist! I am clueless on collection 1 but do you think 1 and 2 are the same species ???

I had no time for the micro, which I plan tonight after work or tomorrow.

Dr Jordi Vila had hinted to be Pseudobaeospora albidula (complex) and I see a lot of similarities. Just wanted to give you an update

Paper on this species:

(PDF) Pseudobaeospora albidula (Agaricales) found in the Czech Republic

P.s. I can supply micro measurmenets tmrw

Hi, I was doing a foray in a damp habitat covered in litter of Quercus ilex (Holm oak). There was a large population of Boletales. I have isolated four collections although realistically I think there are less different species and possible there are 2 Xerocomellus / Xerocomus. I have previously recorded Xerocomellus redeuilhii from this site.

1

Small to medium-sized fruiting bodies, scent faint and not distinct, taste mucoid and fungoid, bruising of pores becomes slightly darker (= no colour change), bruising of stipe no colour change either when cut context completely yellow even at the base. Stipe bright yellow without reddening at the base including when cut. Some specimens with cracked pileus showed an interesting red reticulate pattern where cracked. No colour change when pores and stipe are bruised

2. This forms a beautiful pin-shaped reddish fruiting body where it remains small and almost spherical. Taste fungoid and very palatable, scent nil, when cut there is darkening at the base which eventually turns in some streaks of greyish-dull blue at the base. No colour change when pores and stipe are bruised

3. The third 'collection' consists of medium-large fruiting bodies, with a pale or light-coloured pileus, tan or peached colour, sometimes forming cracked cuticle with reddish flesh. Stipe red for most of the length (Xerocomellus redeuilhii ?!?)

4. Maybe same as 2 but with flattened pileus

Opinions greatly appreciated. These are all from the same location (100 x 50 m area), calcareous rock or soil in a damp location over leaf litter of Quercus ilex.

Xerocomellus redeuilhii / X. chrysenteron / Hortiboletus rubellus maybe (no.2)

Thank you Pablo. I'll check it up carefully.

An interesting observation ... When I placed a specimen with its base in water for a spore print, almost two days later the water became reddish brown (like a tincture of Iodine), hence a pigment was diffused out from the stipe into solution.

I added a bit of acid and the solution turned clear yellow. Then I added an alkali (10% KOH) and the solution turned cloudy brown, and on standing it resulted to be a brown precipitate. That's really amazing, I don't know but the solution behaved as if it was composed of a metal salt, and yellow-brown brings in mind an Iron (III) salt. Is this fungus and Iron absorber !?! Would love to read any experiences about this!

As promised here is a picture of the spores in KOH (4%). They are charcoal grey with a fine hint of brown.

I just read in a key* the following element :

Average length of basidiospores under 10.5–11 μm, Basidiospores often remain immature = P. lactea (= P. leiocephala)

* From: The genus Parasola : phylogeny and the description of three new species

János G. Szarkándi, Geert Schmidt-Stohn, Bálint Dima, Shah Hussain, Sándor Kocsubé, Tamás Papp, Csaba Vágvölgyi & László G. Nagy (2017)

Guys - you are completely right and I forgot about Leveillula lanuginosa powdery mildew apart from the commoner E. heraclei which both infect specifically F. vulgare here, and at the same time too. There is more documentation here:

Another powdery mildew on Foeniculum vulgare - Leveillula lanuginosa (f. foeniculi) - Forum ASCOFrance

Both mildews can co-occur in a population of the same wild host (Common fennel), but now I think Eryphise prefers the leaves and petioles while Leveillula lanuginosa is found covering as cottony mold along the main stem (for now, this is just a personal observation).

I used the scotch tape method Boccaccio, but maybe I had to press harder on the mold because I mostly got conidiospores (although Leveillula lanuginosa may have no distinct ones).

Well this is definitely Leveillula lanuginosa - Thank you ...also for refreshing my memory!

Thank you CF for your reply and tip. I can mount in 3% KOH later just for completeness. I was actually mounting the slide for cystidia (and basidia) and the spores were there 'as a bonus' where I photographed as well. First time I see this species and have experience with it. Unlike plicatilis, it did not open and became blackened when immature specimens were put in water ex-situ. Happy!

Parasola species on calcareous soil, apparently terrestrial but lot of organic litter within and above soil (broad leaved) accompanied by Acanthus mollis.

Without setae in the cuticle.

Gills not deliquescent

Cheilocystidia numerous, broadly utriform,

Spores wide, apple-shaped or wide ovate

Germpore wide

Spore size:

8.6 [9.6; 10.1] 11.1 x 7.8 [8.4; 8.7] 9.3 µm

Q = 1 [1.1; 1.2] 1.3; N = 27; C = 95%

Mean = 9.9 × 8.5 µm; Qe = 1.2

Spores too short for plicatilis, and hairs missing for auricoma - What about P. lactea ?

Thanks Jurgen - good to learn the species is distributed so north!

: thumbup:

This should be Eryphise heraclei. Always found on Foeniculm vulgare (!?!?) in October, even if there are many other Apiaceae species in the wild - although in October many annual species are germinating out.

This should correspond to Xerocomellus redeuilhii (confirmations/disagreement always welcomed), seen a few days ago here in Malta. It was growing under Quercus ilex. Is it recorded in Germany ? The literature says that it replaces X. dryophillus which should be confined to US.

I have found the dried specimen (8mmin size!) and I have the following new data:

• Gills free from stipe and drying to light-brown colour
• Pilleipellis tomentose, trichoderm of sausage-shaped hyphae, sometimes with a pointed tip, clamp junctions observed
• Basidia slender and small with barely visible sterigmata, approx 20-25 um long
• Spores very small barely visible, possibly liberated in groups of 2, 3 or 4s, pip-shaped and only about 2.5 um long
• Cheilocystidia not observed, but not sure if they have been destroyed during drying/rehydration
• Pleurocystidia null

Dear friends

After a hard day of work and part time and house maintenance, I am finally to my escape world of fungi and the kind people in this forum. I have measured the spores and this is the result:

6.4 [7.5; 8] 9.1 × 3.2 [3.7; 3.8] 4.3 µm

Q = 1.8 [2; 2.1] 2.4; N = 41; C = 95%

Me = 7.8 x 3.8 µm; Qe = 2.1

Zitat von Climbingfreak

Hi,

did you measure the spores. I would check Lepiota grangei or L. griseovirens.

lg

Stefan

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- Lepiota grangei is said to have spores> 10 so it can be excluded

- Lepiota griseovirens is matching nicely - spore range OK, slightly swollen pileipellis

Lepiota griseovirens May 1928 - Funghi Velenosi - Funghi in Italia - Fiori in Italia - Forum Micologia e Botanica

Zitat von zuehli

Hi steve,

I think that could be Lepiota elaiopyhylla, but I'm not sure if the spores fit.

Greets

Harald

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- Lepiota elaiophylla has a very evident yellow tones and is said to grow in green houses?!? I think it is not the one. The yellow tones in one of the pics is because of a bad AutoWhiteBalance when taken with flash at home and drying out. The true color of the fresh fruiting body is more whitish.

Thank you Stefan, Harald and Oehrling for the tips

Zitat von Climbingfreak

Hi,

you found an interesting one. I´m a little bit confuses about it. Its a pity that you haven´t better photos of the fresh Specimen. Are you sure that the pileipellis is really a cutis? Im not sure about this in your pictures of the pieipellis.

Best regards

Stefan

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Thanks for replying. The basidiocarp was found and photographed by a colleague and he handed the dried specimen. I am sure that I peeled carefully the outermost layer of the pileus. I can try again just in case I was day dreaming. Also the pileus was clean hence no mould contamination. I still have the specimen if someone wants to have a look.

Here is another unidentified small pale mushroom with contrasting scales on the pileus and dark punctations on the stipe. I think there was/is a ring but got damaged or eroded away. Pileipellis a trichoderm. Clamp junctions were observed. In a phrygana associated with Cistus monspeliensi (or less likely Thymus capitatus). I was guessing about Lepiota, but which species I don't know. In Crete, Lozoides and allies records a number of fungi associated with Cistus, amongst which there is Lepiota locquinii, L. farinolens and L. sublaevigata.

Just a question - Are all Asterophora species parasitic ?

Happy birthday Pablo and thanks for the previous helping posts to my ID of fungi.

Hope you had a good day

LG

Steve