Observation 29585: Suillus bovinus (Pers.) Roussel

When: 2009-10-02

Collection location: Zadnja Trenta Valley, East Julian Alps, Posočje, Slovenia [Click for map]

Who: amadej trnkoczy (amadej)

No specimen available

Surprising, but definitely no Pinus sp. around, but a few young Picea abies at 3-5 m (10 – 16 feet) away and a few large Larix decidua at about 10+ m (30+ feet) away. According to literature it should be mycorrhiza with Pinus sp.?? Unusually strongly decurent pores, cuticle sticky, 5 – 6 specimens in a loose group.

Lat.: 46.40337 Long.: 13.70669
Code: Bot_387/2009-5517

Habitat: Grassland, former pasture overgrown with scattered Picea abies and some Larix decidua, flat ground, sandy calcareous soil on well settled alluvial deposits, fairly sunny, exposed to direct rain, average temperature 6-8 deg C, average precipitations ~3.000 mm/year, elevation 960 m (3.150 feet), alpine phytogeographical region.

Substratum: mossy soil

Place: Zadnja Trenta valley, near and south of ex Fjori farm house, East Julian Alps, Posočje, Slovenia EC

Nikon D70 / Nikkor Micro 105mm/f2.8

Species Lists


Motic B1-211A, magnification 1.000 x, oil, in water.

Proposed Names

74% (2)
Eye3 Eyes3
Recognized by sight
Used references: G. Pace, Vse o gobah (in Slovene), Mladinska Knjiga (1997), p 269.
J.Grom, Naše gobe (in Slovene), Žepna Knjiga, (1981), p 25.
M.Bon, Pareys Buch der Pilze, Kosmos (2005), p 48.
R.M.Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 34.
R.Lueder, Grundkurs Pilzbestimmung, Quelle & Mayer (2008), p 368.
Based on microscopic features: Spore dimensions: 10.0 (SD=0.7) x 4.3 (SD=0.2) micr, n=20.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Additional information
By: amadej trnkoczy (amadej)
2010-07-03 05:52:52 PDT (-0700)

has been gathered through Mr. Gregor Podgornik, NAC (Natural History Center) Tolmin, Slovenia and his colleagues Christopher Hahn, UNI Muenchen, dr. Armin Mesić, Institute Rudjer Bošković, Zagreb and dr. Alfredo Vizzini, UNI Torino. The referees agree that this is not a normal S. bovinus, but probably one with deformed hymenophore (probably by a virus), looking like a mix between S. tridentinus and S. bovinus.

Appreciate your comments
By: amadej trnkoczy (amadej)
2009-12-06 10:19:15 PST (-0800)

Unfortunately, I know less than beans about S.bovinus. But, based on very limited personal shroomy-experience and six books I own (plus WEB) this was the closest I was able to come to. May be I hit ‘Promising’ a little bit too early. Sorry for that. What is sure is that there was definitely no Pinus around. I revisited the place just to verify this. However, one (only) of my books (J.Grom, Naše gobe (in Slovene), Žepna Knjiga, (1981), p25) states: ‘… under Pinus and other conifers…..’. Also the ‘true’ colors on web are much more difficult technical problem than most people are aware of. With my camera I regularly measure color temperature of light with a gray card before taking pictures, process RAW files on a hardware color calibrated monitor and at a constant 5.000K ambient light. Yet, I would still not swear that pores were exactly as yellow as it may appear on your monitors (particularly if not color calibrated). Nevertheless, the list of what is not as it should be is still long….. I would really like to know what this really is. Appreciate your comments very much. Thanks to all.

I know beans about bovinus…
By: Debbie Viess (amanitarita)
2009-12-06 09:11:43 PST (-0800)

but this suillus by any other name is a handsome subject of study.

Very odd
By: Irene Andersson (irenea)
2009-12-06 08:59:26 PST (-0800)

Too yellow pores, too fibrous cap, too ribbed stem, too pale flesh. Too much of everything (and no Pinus either) to make me beleive this is bovinus. At least I’ve never seen them look like this..

maybe not
By: Darvin DeShazer (darv)
2009-12-06 08:49:02 PST (-0800)

Pace and Dahncke both show pictures that resemble North American material in the Bessette bolete book. The pores are only slightly decurrent and the stalk is NOT reticulated and the cap is glabrous and the host is PINE.

What an interesting and unusual Suillus sp.
By: Debbie Viess (amanitarita)
2009-12-06 08:19:24 PST (-0800)
What an excellent observation!
By: Richard Sullivan (enchplant)
2009-12-06 08:12:16 PST (-0800)

You always do such a great job documenting your observations, with excellent photographs, pictures of spores and notes. I always learn so much more from these. Well done.

Created: 2009-12-06 07:23:29 PST (-0800)
Last modified: 2009-12-06 07:23:29 PST (-0800)
Viewed: 268 times, last viewed: 2017-11-12 10:46:03 PST (-0800)
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