date of photo Aug 21, 2014
latitude 46.44428 longitude 13.64734
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location
Mt. Mangart's flats, south slopes of Mt. Travnik, 2.200 m (7.216 feet), near the sharp left turn of upward part of terminal loop of Mt. Mangart's alpine road, East Julian Alps (Posočje, Slovenia)notes Slo.: obuti dežniček - syn.: Agaricus clypeolaris (Bull.) - Habitat: steep, south oriented mountain slope, grassland/sheep pasture, calcareous ground with some siliceous rock; full sun, exposed to direct rain, growing directly under a bush of Daphne mezereum; average precipitations ~ 3.000 mm/year, average temperature 0-1 deg C, elevation 2.020 m (6.650 feet), alpine phytogeographical region. - Substratum: skeletal calcareous ground with some siliceous rock. - Comments: Habitus and many traits of the fungi found correspond well to Lepiota clypeolaris, which is a quite common fungus in the region. However, there are also some surprising disagreements. - Krieglsteiner (2003) describes elevation distribution of about 500 recorded observations of this predominantly woods inhabiting species in Baden-Württemberg, Germany. Not asingle one has been encountered above 1.000 m elevation. Also he considers the species as Mediterranean region centered. In this light an observation above 2.000 m well above tree line in a typically alpine elevation zone is surprising. Further, all my literature claims white spore print, while the spore print of the fungi found is beige (oac858), definitely not white. In several sources the ring is considered short-lived,'…very quickly vanishing and narrow...' (Buczacki (2012)), 'transient', or 'slight cottony' (Arora (1986)), while this doesn't seem to be true for the fungi on my pictures. In addition, I haven't found mentioning clearly yellow color of the buckle in the literature available to me. Authors describe the bucke as slightly darker, darker, ocher-brown or cinnamon brown (Phillips (2006)), but not yellow. Also stipe of this find is less covered by cottony, shaggy scales than observations in the valleys. From these reasons I am not sure that the determination is correct. On the other hand I can't find a better alternative. An Alpine fungi expert would probably solve the problem. - Only two sporocarps close together were found; pileus diameter of the larger 8.5 cm, stipe 8 cm long and 1 cm in diameter, hollow, somewhat fibrous; taste mild mushroomy, slightly unpleasant; smell distinctive, lightly nitrogen(?), unpleasant; if mycorrhizal, then with Daphne mezereum or less probably Salix retusa; SP abundant, beige, oac 858. - Spores smooth. Dimensions:12,8 [14,3 ; 14,9] 16,4 x 5,3 [5,9 ; 6,2] 6,8 microns, Q = 2,1 [2,4 ; 2,5] 2,7; N = 45; C = 95%, Me = 14,6 x 6 microns. Basidia dimensions: 20.2 [28.7 ; 33.5] 41.9 x 6.5 [8.8 ; 10.1] 12.3 microns, Q = 2.6 [3.2 ; 3.5] 4; N = 20; C = 95%, Me = 31.1 x 9.4 microns; Qe = 3.3. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil (spores) and NEA 40x/0.65, magnification 400x (other pictures), in water. AmScope MA500 digital camera. - Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Večna pot 2, Ljubljana, Index Herbariorum LJF - Ref.: (1) Personal communication with Mr. Bojan Rot, www.gobenabovskem.si. (2) D. Arora, Mushrooms Demystified, Ten Speed Press, Berkeley (1986), p 309. (3) S. Buczacki, Collins Fungi Guide, Collins (2012), p 52. (4) R. Phillips, Mushrooms, Macmillan (2006), p 134. (5) R.M. Daehncke, 1200 Pilze in Farbfotos, AT Verlag (2009), p 510. (6) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 4., Ulmer (2003), p 73. Nikon D700/Nikkor Micro 105mm/f2.8contributor's ID # Bot_827/2014_DSC2994 photo category: Fungi - fungi
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