Beiträge von Steve_mt

Thank you everyone for your help and contribution to my post

I was analysing Vellinga 1990 monograph and I am very confident that my material showed here and others from Gozo refers to P. nanus. This is what I wrote at taxonomic comment:

Taxonomic notes: Three small Pluteus species that are morphologically similar to Pluteus nanus are P. thomsonii (Subsect. Eucellulodermini); P. podospileus Sacc. & Cub and P. romellii Britz. (Sacc.) (Subsect. Mixtini). According to Vellinga & Schreurs (1985), the latter subsection is characterised by a pileipellis made up of a mixture of two types of cells: sphaeropedunculate and elongated fusiform or conical hyphae, twice the length of the former. Besides that, P. thomsonii exhibits mucronate cheilocystidia and a strong venose character on its pileus, whereas P. podospileus is macroscopically characterised by a brown floccosity or punctuations on the stipe. P. romellii has a similar pilleipellis to P. nanus, but has a distinct pale or chrome yellow colour throughout most of the stipe, sometimes also seen in the lamellae (Vellinga, 1990). Two forms of P. nanus are given in Vellinga (1990), of which distinction is based on the stipe’s colour and its fine floccose coating. The stipe's reduced floccosity and its light colour turning gray only at the base, assigned the examined material to forma nanus rather to forma griseopus (P.D. Orton) Vellinga. P. nanus and P. griseopus P.D. Orton were previously treated as separate species, but P. griseopus was judged to have minor artificial differences only in the colour of the stipe and so it was demoted to a forma by Vellinga & Schreurs (1985)

So as expected, the old dry specimen could not offer much valuable data over what I already doucmented. The spores are confirmed, the hymenium is completely eroded, the veilar remnants are artistically elegant, with brownish contents and as rather thick-walled (?), but I could just add that I have seen clamp junctions at the filiform structural hyphae; if this is of any relevance.

I attach another image of the pleurocystidia from the fresh specimen, assuming that they are Cystidia,

It is OK Andreas - thanks so much for trying to help (and you did too both in this post and previous ones too!)

Zitat von mollisia

Hello Steve,

can't judge that, I'm too less experienced in this group of ink caps. I think that is something for coprinus specialists.

all the best,

Andreas

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So what we have... The pileipellis is composed of a cellular hymeniderm made of subspherical to broadly pear-shaped cells, with a smooth surface, while the spores, copious, are subspherical, with a central oil drop, eccentrical apiculum and measuring 6-7.5um approx.

Specimens found, rather workable, I follow up. I am thinking Pluteus nanus for the small size and already found it in three locations in Gozo (kinda frequent).

I still have the specimen. Is it of further use to recheck something?

Hre it is photographed on narrow 'twigs'

banco de setas coprinopsis goudensis coprinus goudensis ulje | www.bancodesetas.es

It is a very curious Coprinopsis. Many things match for goudensis too, although admittingly the velar hyphae do look thick (but how important is this?). Then the habitat for goudensis is lignicolous and in my notes, I have written dry debris of herbaceous plants, but I have not checked very carefully the debris and maybe it was mixed with some slender twigs?!?! I can see parallel ridges along the substrate indicating herbaceous stem that dried out but I don't know which and again it is a bit (very bit!) thick and lignicolous. Ajjj!

These photos are from an old collection and I don't remember much about it, or if I have a specimen, but this photo shows clearly spores in the range of 8.5-9.5um length and pleuro- (or cheilo-) cystidia that are broad and short. I hope there weren't two or more specimens of different species close to each other and have a mixture. The substrate was annual herbaceous plants (maybe grasses?) that dried out in summer and then this fungus grew after the autumn rain.

Zitat von mollisia

Hello,

even more interesting to me would be the ascomycete on the wood (?) beneath the Pluerotus

I don't remember to have seen such a Pleurotus, but on Malta there might be Pleurotus species not occurring in the rest of Europe.

all the best,

Andreas

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Ooohhh, such a pity because I sent my sample in Eygpt to a mycologist to identify the species but apart he has not carried out any investigation, he kept (or lost?) the samples and never replied to me when asked to send my sample back. I check if I have something left maybe I can send it to Spain. I presume if I find a dry specimen it would not help to carry out further investigations (micro or chemical)?

Zitat von Beorn

Hello!

Yes, microscopically that looks like a Pleurotus species. But wich one could be difficult, because the microscopic features of all those species from the ostreatus - group look nearly the same. The substrate would be interesting, was there wood beneath the soil? Because if not, and maybe the fungus grows on roots of smaller plants, that could be interesting.

LG; Pablo.

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The substrate was wooden chips and some gravel that was used as animal bedding (and hence it might have some excreta) dumped on soil in an olive grove. There was some burning too but it is probably not relevant. So We could safely exclude roots of smaller plants. I wonder if we can advance further or stop as P. ostreatus s.l. ?

Zitat von Climbingfreak

Hi,

definitely not a Pluteus. I think Pleurotus sp. is correct.

best regards

Stefan

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Yes, I wanted to write Pleurotus like in the title.

Sorry for sending you crap data and non-representative photos here. I try to retrieve a specimen from the collection box, keeping my finger crossed the specimens are still intact and will follow up. I am quite sure the gills are free - I add few more photos. Its habit and colours (overall) reminds me in Pluteus nanus

Thank you Andreas and Mollisia for helping out.

Host / Habitat: Damp and old stems of dead herbaceous plants

Pleurocystidia size (um):

84.83 x 43.75

86.12 x 48.97

94.08 x 47.90

59.24 x 33.06

58.74 x 35.24

83.79 x 47.61

90.78 x 45.38

Location Gozo (Matlese Islands)

Pluteus sp. ? Can it be identified from the photos supplied. It was smallish, about 3cm across

Gregarious specimens scattered on a clump of woody stalks (I dont know what!) in a damp area. Rather small fungus, gills free, rim darkens with age. No spore print or micro... hope it is not essential for this one.

Dear friends,

I have this Coprinopsis species about 3cm long with partial veil having intertwined filaments with long warts or tubercles projecting out. Cystidia and pleurocystidia balloon shaped.

Spore size:

7.9 [8.7; 9] 9.8 × 5.7 [6.2; 6.4] 6.9 µm

Q = 1.2 [1.4] 1.6; N = 30; C = 95%

Me = 8.9 × 6.3 µm; Qe = 1.4

Can you help me with this natural mold forming a dull cinamon / olive-brown mat on the bark of fallen twigs of Olea europaea. The spores are 5um across. There seem to be a verticllaster (whorl) of 3 to 6 phiallides with a swollen head with minute pegs each giving rise to a spore. If further measurments are required, I can carry them out. Thanks!

From where they extract genetic matetial to sequence? Do u know? Spores not suitable i guess.

I am writing a report on this fungus and I wonder which taxon I should use - ephippium (1841) or sublicia (1799)?

Maybe this recent paper by Skrude and Scumaker (Dec 2020) : ( https://www.researchgate.net/publication/340431565_The_genera_Helvella_and_Dissingia_Ascomycota_Pezizomycetes_in_Europe_-_Notes_on_species_from_Spain ) using the taxon sublicia is the answer.

Very nice - I love slime moulds so much, I think the only group which still mostly rely on morphology and only occasionally on genetic sequencing. Very nice specimen there - bright amber-rust - love it.

DOWNLOADED xxx

Many thanks, Sir Nobi - They will be helpful and makes my Digital Library a bit more interesting!

I am thinking that we should be around Cystolepiota for that fringe and flocculose cap.

Hello, I am back on track to identify this small mushroom. Gills are free (or slightly adnexed). Stipe bruises a little (?); cap floccose and appendiculate