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Reticularia splendens var. jurana
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Photographer: Dr. Amadej Trnkoczy
ID: 0000 0000 1016 3590 (2016-10-25)Copyright © 2016 Dr. Amadej Trnkoczy
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Oct 21, 2016
latitude 46.35884 longitude 13.69819
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location
Lower Trenta valley, between villages Soča and Trenta, right bank of river Soča, close to the place where the trail to abandoned settlement Na Skalah passes the ravine Sraunk, East Julian Alps (Posočje, Slovenia)notes syn.: Enteridium juranum (Meyl.) Mornand, Enteridium splendens var. juranum (Meyl.) Härk., Reticularia jurana Meyl., Reticularia lycoperdon var. jurana (Meyl.) G. Lister - Habitat: pasture, at the edge of the mixed forest, Fagus sylvatica, Ostrya carpinifolia and Picea abies dominant trees; moderately inclined slope at the foot of mountains, south east aspect; colluvial, skeletal, calcareous ground; mostly sunny place; relatively warm and dry place; exposed to direct rain, average precipitation ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 615 m (2.020 feet), alpine phytogeographical region. Substratum: dead, thick, partly decorticated branch of Ostrya carpinifolia laying on ground; fund on top side of it; wood still firm, hard to cut; in its initial state of disintegration. Comment: Three aethaila found in a circle of about 0.4 m diameter. This myxomicete can be recognized by its vividly pink (not yet mature) aethalia, white hypothallus, characteristic spores, which are distinctly reticulate only on about 2/3 of their surface and persistent pseudocapillitium consisting of membranous perforated plates and threads. Reticularia splendens var. jurana can be distinguished from Reticularia splendens var. splendens by smaller size of aethalia and flaccid cortex. To my knowledge this is the second or third find of this species in Slovenia and the first one in the Julian Alps. Spores coarsely reticulated on about 2/3 of their surface and minutely warted (barely seen with my equipment) on the rest of it. Globose to subglobose. Dimensions (without reticule or warts): 6,3 [7 ; 7,2] 7,8 x 6,1 [6,8 ; 7] 7,6 microns; Q = 1 [1,0] 1,1; N = 40; C = 95%; Me = 7,1 x 6,9 microns; Qe = 1. Reticule > 1 micron high. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil (spores), NEA 40x/0.65, magnification 400x and NEA 10x/0.25, magnification 100x (pseudocapillitium); fresh material; in water. AmScope MA500 digital camera. Spores were taken from the centre of the second aethalium (Fig. 5, larger one) by soft brush. Ref.: (1) B. Ing, The Myxomycetes of Britain and Ireland,The Richmond Publ. Co.Ltd, (1999), p 89. (2) S.L.Stephenson and H.Stempen, Myxomycetes, Timber Press Inc.(2000), p 122. (3) M. Poulain, M. Meyer, J. Borronet, Les Myxomycetes, FMBDS (2011), Vol.1., p 318; Vol.2. p 52. (4) http://www.repository.naturalis.nl/document/572530 (5) http://www.zdravgozd.si/bi_karta_sre.aspx?idorg=d0561d66-42d2-4faa-8945-4b7eb231e6fbcamera Nikon D700/Nikkor Micro 105mm/f2.8
contributor's ID # Bot_1021/2016_DSC5937 photo category: Fungi - mold
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