Image de Lépiste blanchâtre

Description :

Slo.: bledovijolina kolesnica - syn: Clitocybe glaucocana (Bres.) Bigelow & Sm., Lepista nuda var. glaucocana (Bres.) Krieglst - Habitat: Mixed wood; Fagus sylvatica, Picea abies, Ostrya carpinifolia, Fraxinus ornus, Corylus avellana dominant trees; under Fagus sylvatica; slightly inclined mountain slope, southeast aspect; calcareous, skeletal ground on coluvial ground; in shade, moderately dry and relatively warm place; protected from direct rain by tree canopies; average precipitations ~ 3.000 mm/year, average temperature 7-9 deg C, elevation 605 m (2.000 feet), alpine phytogeographical region. Substratum: a layer of dead Fagus sylvatica leaves. Comments: Lepista glaucocana is a quite common mushroom in Trenta valley. It is beautiful, quite large and usually occurs in large groups. Its color is variable and hence it is sometimes difficult to be distinguished in field from similar more violet Lepista nuda and more whitish Lepista irina. Growing gregarious, over 15 pilei present; pilei diameter from 5.5 to 10 cm, stipe from 4 to 6.5 cm long and from 1.3 to 4 cm in diameter; smell strong on something in between earthy, floury and mushroomy; taste mild, mushroomy, quite pleasant; pilei cuticle peels of easily; SP abundant, whitish-beige, oac7. Spores smooth, somewhat warty. Dimensions: 6.2 [6.9 ; 7.2] 7.9 x 3.6 [4.2 ; 4.4] 4.9 microns; Q = 1.4 [1.6 ; 1.7] 1.9; N = 40; C = 95%; Me = 7 x 4.3 microns; Qe = 1.7. Olympus CH20, NEA 100x/1.25, magnification 1.000 x, oil, fresh material; in water. AmScope MA500 digital camera. Herbarium: Mycotheca and lichen herbarium (LJU-Li) of Slovenian Forestry Institute, Vena pot 2, Ljubljana, Index Herbariorum LJF Ref.: (1) G.J. Krieglsteiner (Hrsg.), Die Grosspilze Baden-Wrttembergs, Band 3., Ulmer (2001), p 294. (2) J. Breitenbach, F. Kraenzlin, Eds., Fungi of Switzerland, Vol.3. Verlag Mykologia (1991), p 210. (3) http://www.gobe.si/Gobe/LepistaGlaucocana (4) http://www.svims.ca/council/Lepist.htm SP