Public Description of Pluteus saupei Justo & Minnis

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Name: Pluteus saupei Justo & Minnis
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Description status: Unreviewed

General Description:

Pileus 10-35 mm, convex or plano-convex, with shallow depression at center; surface innately radially fibrilose; with blackish, spinulose squamules at center; margin translucently striate in older specimens; grey to grey-brown, bruised regions become blue, with olive-green tinges in older specimens.

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Diagnostic Description:

*Pileus 10-35 mm, convex or plano-convex, with shallow depression at center; surface innately radially fibrilose; with blackish, spinulose squamules at center; margin translucently striate in older specimens; grey to grey-brown, bruised regions become blue, with olive-green tinges in older specimens. Lamellae crowded, free, ventricose; approx. 5 mm broad; pink, with slightly paler edges. Stipe 10-50 — 3-5 mm, cylindrical, broadened towards base; white, with some longitudinal fibrils near the base, turning blue when bruised, with olive-green tinges in older specimens. Context color not recorded, probably whitish. Smell and taste not recorded. Spore print pinkish-brown.

Basidiospores [30, 1, 1] 6.5-9 (-10) — 5-6.5 (-7) µm, avl — avw = 7.7 — 5.8 µm, Q = 1.15-1.6 (-1.7), avQ = 1.33, (broadly) ellipsoid, rarely oblong. Basidia 17.5-26 — 7.5-10 µm, tetrasterigmate, rarely bisterigmate, clavate, oblong or ellipsoid, some with median constriction. Pleurocystidia metuloid, 70-85 — 17-22 µm, fusiform or narrowly utriform, with 2-4 hooks at apices, but hooks usually poorly developed; hyaline, with up to 2 µm thick walls, frequent all over lamellar faces. Lamellar edges sterile. Cheilocystidia 45-85 — 9.5-19.5 µm, mostly lageniform with elongated apices, some fusiform or ovoid; hyaline, thin-walled; crowded, forming a well-developed strip. Pileipellis a cutis, with terminal elements 80-135 — 10-16 µm, cylindrical, some strongly tapering towards apex; mostly filled with brown intracellular pigment; with thin, smooth walls. Stipitipellis a cutis; hyphae 5-15 µm wide, cylindrical, colorless or with brown pigment; with thin, smooth walls. Caulocystidia absent. Clamp-connections present in all tissues, more abundant at the base of cheilocystidia and on pileipellis.

Habit, habitat and distribution: Solitary, on wood in mixed mesophytic upland forest. Collected in central Illinois during summer (August).*

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Description author: Image Sharer (Request Authorship Credit)


Created: 2019-01-01 07:29:32 CST (-0600) by Image Sharer (image sharer)
Last modified: 2019-01-01 07:29:32 CST (-0600) by Image Sharer (image sharer)
Viewed: once, last viewed: 2019-01-01 07:29:33 CST (-0600)