Name: Laccaria cyanolamellata B.E. Lechner & J.E. Wright
Version: 1

First person to use this name on MO: Michael Wood

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Rank: Species

Status: Accepted

Name: Laccaria cyanolamellata

ICN Identifier: missing

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Author: B.E. Lechner & J.E. Wright


Brief Description: [See More | Edit]

Pileus (Fig. 4) 30-40 mm diam., 10-20 mm high, campanulate to applanate, not striate, buck-skin (A6P14, Maerz and Paul, 1930) to alamo (A12P14, Maerz and Paul, 1930), non striate or translucent striate when fresh, glabrous. Lamellae adnate to subdecurrent, close to subdistant, relatively thin to thick, greyish-blue, 2-3 mm wide, appearing powdery when dry. Stem long, 85-120 × 2-4 mm, somewhat twined, equal, dry, compact, smooth, powdery under the lens, greyish becoming whitish. Pileipellis (Fig. 1A) formed by perpendicular, thin walled, clavate elements, 29-68 × 11-20 μm, some golden brownish in KOH mixed with hyaline ones. Context hyphae (Fig. 1B) 2.5-13 μm diam., wider towards the centre, hyaline, clamped, sparsely branched, fragile, wall thin to slightly thickened. Hymenophoral trama subparallel, Stipitipellis a cutis with irregular tufts of clampless, thin to thick-walled hyaline hyphae with a parallel arrangement, 2.6-10 μm diam. Basidia (Fig. 1C) 60-70 × 11-14 μm, 2-spored, rarely 1-3-4-spored, sterigmata up to 10 μm long. Basidiospores (Fig. 1D) (excluding ornamentation) (10.4-)11.4-14(-18) × 11.4- 15 μm diam. (x = 12.7 × 12.2), Q = 1-1.12, hyaline, globose to subglobose, equinulate, equinulae 1-3.5 μm long ( x = 1.9 ± 0.9).
Habitat: on humus, solitary or gregarious.

Notes: The bluish lamella place this species in metasection Amethystina, characterised by the presence of violet pigments (Mueller, 1992). Differing from the species in this metasection by its particular elongate, somewhat twined, whitish stem, lamellae not very thick as occurs in most Laccarias and globose spores, more than 10 μm diam.

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