Observation 59729: Pseudoclitocybe expallens (Pers.) M.M. Moser

When: 2010-11-21

Collection location: Vrsnik valley region, East Julian Alps, Posočje, Slovenia [Click for map]

46.33061° 13.69033°

Who: amadej trnkoczy (amadej)

No specimen available

Code: Bot_478/2010_IMG3257

Habitat: Unimproved grassland grassed by sheep, northeast oriented mountain slope, calcareous ground, mostly sunny, exposed to direct rain, average precipitations ~ 3.000 mm/year, average temperature 6-8 deg C, elevations 630 m (2.050 feet), alpine phytogeographical region.

Substratum: grassland soil.

Place: Vrsnik valley, at the foot of Mt. Črni vrh, 1.544 m (5.064 feet), East Julian Alps, Posočje, Slovenia EC

Comments: Growing solitary or two, tree together in a loose group, pileus diameter up to 55 mm. SP white, slightly beige.

Canon G11, 6.1-30mm/f2.8-4.5

Species Lists


Smaller spores belong to Panellus serotinus which I kept close to the place where I collected spores of Pseudoclitocybe cyathiformi.

Proposed Names

19% (2)
Recognized by sight
Used references: (1) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 290.
(2) M.Bon, Parey’s Buch der Pilze, Kosmos (2005), p 130.
(3) R.Lueder, Grundkurs Pilzbestimmung, Quelle & Meyer (2008), p 223.
(4) A.Poler, Veselo po gobe (in Slovene), Mohorjeva družba Celovec (2002), p 218.
Based on microscopic features: Spore smooth, dimensions 8.3 (SD = 0.6) x 5.3 (SD = 0.4) micr., Q = 1.65 (SD = 0.12), n = 30. Motic B2-211A, magnification 1.000 x, oil, in water.
Based on chemical features: Smell mild, pleasant.
55% (1)
Used references: Funga Nordica: “in open land on neutral, alkaline meadows influenced by cattle, calcareous coastal meadows, dry meadows, etc. […] margin striate half-way to 1/3”.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Comparisson with Moser
By: amadej trnkoczy (amadej)
2011-12-18 16:27:32 GMT (+0000)

Thank you Sava for consideration of my observation of Pseudoclitocybe and sorry for my late response. It took me some time to get original Moser’s description of both P.expalens and P.cyatiformis to reconsider how I came up with P.cyatiformis. Unfortunately I don’t own this book.

I observed from the beginning a discrepancy between Breitenbach’s statement for P.cyatiformis “…never striate pileus…” and the mushrooms I found. Some were clearly striate. At that time I was confused also by the picture of the P. cyatiformis (next to the Breitenbach’s text) which shows two fruitbodies – one of them evidently striate. So, the picture actually contradicts the text. Therefore I didn’t pay too much attention to this character. P.expallens is only mentioned in Breitenbach without much detailed information.

If we look at Moser, he mentions striated cap for P.expallens. He doesn’t include this character for P.chyatiformis. Clearly, based on striation described in Funga Nordica my observation should be determined as P.expallens. However, some other characters seem to me to support my original determination.

Size according to Moser: cup diameter 4-7 cm P.cyathiformis and 2-4 cm P.expallens, stipe height 5-8 cm for P.chyatiformis and 3-4 cm P.expallens. Most of mature cups I found were about 4 to 5.5 cm in diameter and all of them where much taller than 4 cm, some even taller than 8 cm. Spore dimensions: 8-10/5-6 micr P.cyathiformis and 7-9/6-7 micr P.expalens. Measured spores 8.3 × 5.3 (average) fit significantly better to P.cyathiformis. Also distinctive white micelium at the base of the stipe is a character speaking in favor of P.cyathiformis. Data about color is a problem for me. What is the difference between ‘kaffeebraun’ (coffee-brown) and ‘graubraun’ (gray-brown)? For me Turkish and most of Italian coffee is black, the color of coffee I drink at home depends mostly on quantity of milk I use and American coffee is almost colorless ;-). So, how can I compare this with gray brown? Nevertheless, color names given in Moser conflict neither with P.cyathiformis nor with P.expallens. On the other hand, non-striated cups remain a problem. Also habitat description from Funga Nordica you provided fits perfectly to the place of my observation, actually much better than the one from Moser who has ‘Nadelwald’ (coniferous wood), Triften (access paths to pastures) and ‘seltener auf Holz’ (rarely on wood).

Certainly I am not in a position to judge which option is correct and which wrong. May be we will learn something new with time or somebody else will contribute additional information? Anyway, thank you very much for your contribution again.

I’ve never seen them
By: amadej trnkoczy (amadej)
2010-11-28 19:49:12 GMT (+0000)

Yes, indeed. I’ve never seen them until recently. Interestingly there were many growing on this mountain pasture. I am a little bit puzled by the fact that J.Breitenbach, F.Kraenzlin, Eds., Fungi of Switzerland (1984) state “… pileus edge never striate…”. In my case this doesn’t hold for older cups as can be seen from the pictures. Your experience?

nice find!
By: Johannes Harnisch (Johann Harnisch)
2010-11-26 01:40:40 GMT (+0000)

Created: 2010-11-25 18:26:40 GMT (+0000)
Last modified: 2011-12-11 21:46:12 GMT (+0000)
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