First person to use this name on MO: Image Sharer
Name: Cortinarius platypus
Author: (M.M. Moser) M.M. Moser
Citation: Kleine Kryptogamen Flora, 2: 292 (1967).
Pileus 45-60 mm, convex, plano-convex then plane or, sometimes, slightly depressed at centre. Diversely coloured, GDA 50853: when young pale violet (18A2), pale bluish violet (22A3) or pale purplish grey (9B2, 12B2) mixed with whitish or pale cream hues, after discolouring and then in older basidiomata brownish orange (5B5) or cinnamon brown (8D4); violet (9C3), pinkish vinaceous (12B3), lilac (15B3) universal veil remnants abundant on cap surface, and pale violet (18A2) on bulb; GDA 52540: golden yellow (5B7) and greyish orange (5C3), with several reddish-grey or purplish-grey hues (7B2); whitish or greyish- white universal veil remnants on cap. Lamellae crowded, violet (15C4, 15C4) and purplish grey (14A2). Stipe 50-60 × 13-15 mm, slightly slender (S.L./S.W. = 3.8-4.6), cylindrical, with a variable pale violet (19B3) marginate bulb (× 18-35 mm); whitish, with lavender greyish (19A2), lavender (20A3) or pinkish (15A2) diffuse hues, but turning golden yellow (4A7) or greyish orange (5C3) in older basidiomata. KOH reddish brown (8D8) in cap and bulbipellis.
Pileipellis an ixocutis, epicutis thick, the upper-layer made up of gelatinized 2-2.5-3(-4) μm wide, erect, ± sinuous, cylindrical, some- times slightly clavate at top hyphae, hyaline or pigmented, with ± intensely yellowish cellular pigment, some hyphae with encrusted-parietal pigment (older basidiomata). The basal part of the epicutis is formed by loosely interwoven repent hyphae, which, finally, form a pseudo- parenchymatous layer of (sub)parallel, hyaline, 4-8.5 μm wide hyphae. Clamps presents at all septa. Basidia 4-spored, (× 7.5-9.5 μm), claviform. Lamellae edge with frequent clustered hyaline sterile cells 22-35 × 6.5-16 μm, cylindrical, claviform, sub-pyriform, etc. Spores (Fig. 2b) 9.6-10.3-11 × 5.6-5.9-6.1-6.6 μm, amygdaloid or subcitriform [Q: L/W: 1.5- 1.67-1.73-1.8(-2)], with moderate or rather coarse ± interconnected warts.
Habitat and known distribution: In the Iberian Peninsula it is known only from Burgos province (northern Spain), growing in Q. ilex and Q. faginea forests (Cadiñanos-Aguirre, 2004); for this reason our records increase its distribution area. In Europe it fruits under deciduous trees and is not a frequent taxon.
Created: 2018-11-22 02:12:09 PST (-0800) by Image Sharer (image sharer)
Last modified: 2018-11-22 02:13:52 PST (-0800) by Image Sharer (image sharer)
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