Entoloma subfurfuraceum Hesler (1974: 716)

Montañez, Diego, Noordeloos, Machiel E., Rodríguez, Olivia, Vargas, Ofelia & Guzmán-Dávalos, Laura, 2016, Notes on the genus Entoloma (Basidiomycota, Agaricales) in two volcanic areas of Jalisco, Mexico, Phytotaxa 277 (3), pp. 211-236 : 228

12. Entoloma subfurfuraceum Hesler (1974: 716) , FIGURE 12 .

= Leptonia subfurfuracea (Hesler) Largent (1977: 249)

= Leptoniella earlei Murrill (1911: 272)

= Entoloma earlei (Murrill) Hesler (1967: 35)

Description:— Pileus 20–25 mm broad, convex, umbilicate, dry, dull, centre pruinose, elsewhere appressed-squamulose to fibrillose, smooth, margin involute, pale brown with pink tinges. Lamellae decurrent to subdecurrent, subdistant, pink, edge entire, concolourous. Stipe 35–40 × 2–3 mm, central, cylindrical, equal, polished, glabrous, with pruinose apex, smooth, pale brown with yellow and pink tinges, whitish at the base. Context whitish. Odour sweet. Taste like grass.

Basidiospores 11.2–13.6 (–16.0) × 7.2–8.0 (–8.8) μm, Lm = 12.7, Wm = 7.8, Q = 1.5–2.2, heterodiametrical, 6–7 (–8) angled in side-view with rather blunt angles, colourless. Basidia 31–43 × 8–11 μm, 4-spored, cylindro-clavate, colourless, clampless. Pleurocystidia absent. Cheilocystidia absent. Pileipellis a trichoderm, terminal elements 44– 88 × 8–24 μm, broadly clavate, with yellow plasmatic pigment. Caulocystidia 20–76 × 6–16 μm, cylindro-clavate, abundant at the stipe apex. Clamp-connections absent.

Habit and habitat:—Gregarious, among moss, in Quercus - Pinus forest.

Material studied:— MEXICO. Jalisco, Municipality of Tequila, volcán de Tequila, km 19 road to microwave transmission tower, 14 September 1998, I. Álvarez 309 (IBUG!).

Comments:—This species from Entoloma subgen. Cyanula is characterized by its pale brown pileus with umbilicate, pruinose or furfuraceous centre, the decurrent lamellae, large basidiospores, clampless hyphae, and trichodermal pileipellis. It belongs therefore in Leptonia sect. Cereicaules following Largent (1977, 1994), where it keys out as L. earlei Murrill (1911) described as having a dark brown stipe and a very variable size of the basidioma with 7–50 mm broad pileus and 1–9 mm wide stipe. However, Hesler (1967) mentioned that the pileus was up to 20 mm broad and that the stipe up to 2 mm wide and very pale brown. Entoloma badissimum (Largent) Noordel. & Co-David in Co-David et al. (2009) differs by the bigger basidiomata and by the dark brown pileus ( Largent 1977).

Figures

FIGURE 12. Entoloma subfurfuraceum. a. Basidiospores. b. Basidia. c. Pileipellis. d. Caulocystidia. All 1000×, except basidiospores 3000×. Drawings by Diego Montañez and Machiel Noordeloos.