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Page number:127 
Remarks (internal):Although the protologue is quite obscure and may apply to any Parasola taxon, there is consensus about the interpretation and usage of the name C. plicatilis in recent literature (Uljé & Bas 1988, Uljé & Bender 1997, Uljé 2005). As Art 8.1 of the Botanical Code allows illustrations to serve as types, we hereby designate as lectotype: 
Description type:Non-original description 
Description:Description - Pileus 5-10 x 8-20 mm when still closed, cylindrical, ellipsoid or obovoid, expanding to convex-hemispherical, finally applanate with a slightly enrolled margin and a markedly depressed disc, surface glabrous, radially translucently striate when young, on expanding becomes radially sulcate- grooved, up to 35 mm in diameter when fully expanded; margin even when young, soon becoming crenulate, color varying from melleous to pale-brown when young, becoming warm fawn on the ridges when mature, between ridges whitish, at centre with +/- sharply delimited darker button, on aging gradually becoming grayish-tinted, not discoloring; lamellae crowded, thin, free, not reaching stipe, ending up in a collarium-like formation, up to 2 mm broad, not or only very slightly ventricose, edge fimbriate in young stages, white when young, later greyish, finally blackish, different parts of the gills do not mature in parallel, not deliquescent, only collapsing when fully mature; stipe 0.5-3 — 30-70 mm, slender, fragile, fistulose, cylindrical, at base with scanty whitish tomentum, surface glabrous or finely longitudinally silky, whitish all over when young, on aging becoming pale-ochraceous; context thin and brittle, whitish, without a distinct smell or taste.
Basidiospores [20,1,1] 10.8-14.2 x 7.8-8.5 x 6.8-7.5 µm, on average 12.41 x 8.21 x 7.14 µm, Q1 = 1.34-1.67, Q2 = 1.61-1.86, strongly lentiform, in the frontal view chiefly limoniform-subhexagonal, more rarely ovoid, broadly ellipsoid, in the lateral view ellipsoid to subamygdaliform, with an eccentric, 1.9-2.3 µm wide germ-pore, color very dark reddish brown, opaque, smooth, with a moderately thick wall; basidia clavate, most with median constriction, bimorphic, 23-34 x 10-12 µm; cheilocystidia densely packed, mainly utriform, cylindrical, oblong, rarely clavate-globose, 40-60 x 13-27 µm; pleurocystidia mainly broadly utriform, oblong or subcylindrical, often obovoid, rather abundant; pileipellis hymeniform, glabrous; veil, pileocystidia, and caulocystidia absent; clamps present.
Lectotype here designated: W. Curtis (1781), Flora Londinensis 1: tab. 215 [engraved no. 200].
Additionally, it seems necessary to designate an epitype in order to stabilize the taxonomy of this name and to give a thorough, modern description of the specimen:
Epitype here designated: Hungary, Bács-Kiskun: Kecskemét, NyÀ­r, Convallario-Quercetum roboris on sandy soil, 3 September 2006., L. Nagy, SZMC-NL0075 (BP). Figs. 40-43
Nuclear ribosomal ITS and LSU sequences have shown that the epitype collection is nested within the clade formed by other specimens of P. plicatilis. These sequences clustered together with other materials of P. plicatilis, forming a well-supported lineage (BPP: 1.00, ML and MP bootstrap: 100%) (Nagy et al. 2009). In this case it was important to test the position of the epitype specimens, because unpublished sequence data suggest the existence of another species related to P. plicatilis. Typical specimens of this hitherto undescribed taxon have a lilaceous stipe, and a slightly darker-brown pileus than P. plicatilis. As in P. lilatincta, it is often difficult to recognize the lilaceous colouration of the stipes. Further, in dried specimens, the lilac colouration fades to a dark ochraceous tint, making identification of dry materials difficult.
Taxon name: