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Lepiota oreadiformis
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Photographer: Dr. Amadej Trnkoczy
ID: 0000 0000 0116 2554 (2016-01-16)Copyright © 2016 Dr. Amadej Trnkoczy
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Aug 27, 2014
latitude 46.36131 longitude 13.70194
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location
Lower Trenta valley, between villages Soča and Trenta, right bank of river Soča, 'Na Melu' pasture near Trenta 2b cottage, on the uppermost part of the pasture; East Julian Alps (Posočje, Slovenia)notes Slo.: gladki dežniček - syn.: Lepiota pratensis (Buill.: Fr.) Rea, Lepiota laevigata (Lange) Lange - Habitat: grassland, mountain pasture; near mixed wood edge; moderately inclined mountain slope; southeast aspect; shallow soil, skeletal, calcareous ground; open, sunny place; dry and relatively warm place; exposed to direct rain; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 620 m (2.050 feet), alpine phytogeographical region. Substratum: soil among grass. Comments: I find Lepiota a difficult genus regarding determination of species. For this find I was split between two options Lepiota clypeolaria and Lepiota oreadiformis. Lepiota clypeolaria is a much more frequent species in my country. Contrary, Lepiota oreadiformis is rare. Statistically the first option seems therefore much more probable. However, the sporocarps found were significantly smaller than of typical Lepiota clypeolaria, mature specimens lacked distinct annulus, and habitat of this find doesn't seem compatible with Lepiota clypeolaria at all (it grows in woods). Therefore it seems that Lepiota oreadiformis is a better fit. Typical habitat of this species are open places on dry, extensively used, not fertilized, base rich grassland, which perfectly fits to this find. With respect to pilei surface quite large differences can be found on pictures in the literature. Frequently pictures show pilei with smoother surface. However, authors state: pilei covered by 'distant, granular squamules, radially wrinkled' (Ref.:1), 'lightly covered by small, ocher brown, radially fibrous squamules' (Ref.4) and 'minutely felty when young, but breaking up into scales on ageing' (Ref.:2). Also, most pictures show pilei with less prominent buckle. So, I am not completely sure the determination is correct. Unfortunately, spore dimensions proved to be of no use for determination, at least against Lepiota clypeolaria. Differences in average spore dimensions for a given species among authors are larger than average differences between both species. Growing scattered and in small groups; about ten pilei present; pilei diameter 3 - 4 (5) cm, stipe 4 - 6 cm long and 4 - 5 mm in diameter; on young pilei a faint, white, fibrous 'ring' noticeable, mature fruitbodies with no observable ring; taste mild, not unpleasant; smell very mild but specific, on flour or cakes (?); SP faint, whitish-beige with slight green tint, oac6. Spores smooth. Dimensions: 10.9 [13 ; 13.8] 16 x 4.8 [5.4 ; 5.6] 6.2 microns; Q = 2.1 [2.4 ; 2.5] 2.8; N = 40; C = 95%; Me = 13.4 x 5.5 microns; Qe = 2.4. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, in water, in vivo. AmScope MA500 digital camera. Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Večna pot 2, Ljubljana, Index Herbariorum LJF Ref.: (1) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.4., Verlag Mykologia (2000), p 204. (2) S. Buczacki, Collins Fungi Guide, Collins (2012), p 52. (3) R. Phillips, Mushrooms, Macmillan (2006), p 130. (4) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Württembergs, Band 4., Ulmer (2003), p 91. (5) L. Hagar, Ottova Encyklopedia Húb, Ottova Nakladatelstvi, Praha (2015) (in Slovakian), p 904.camera Nikon D700/Nikkor Micro 105mm/f2.8
contributor's ID # Bot_829/2014_DSC3183 photo category: Fungi - fungi
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MORE INFORMATION ABOUT THIS FUNGUS
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The photographer's identification Lepiota oreadiformis has not been reviewed. Click here to review or comment on the identification. |
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For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT]siol.net. (Replace the [AT] with the @ symbol before sending an email.) |
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