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 Add this item to the list   802809 Original description
   
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Page number:30 
Remarks (internal):The collections of L. umbraphila from northern Queensland are identical to the Seychelles holotype in habitat, all macrofeatures, and nearly all microfeatures. In the holotype (Noordel. & Hauskn. 2007 as E. umbraphilum), the basidiospores are a little larger (7-9 x 6.5-8.5 µm), the basidia are slightly smaller (23-31 x 8-11 µm), and the cheilocystidia somewhat smaller (20-30 x 8-11 µm) than in the northern Queensland collections. We consider these slight differences to be insignificant.
Rhodophyllus dicubospermus Romagn. & Gilles from Gabon closely resembles L. umbraphila with its omphalinoid stature, brown pileus and stipe, bisporic basidia, and cuboid basidiospores but differs in the reddish brown pileus, brownish white lamellae, concolorous lamellar margin, and slightly larger (6.5-9 x 6.2-8 µm) basidiospores (Romagnesi & Gilles 1979).
 
Description type:Non-original description 
Description:Leptonia umbraphila (Noordel. & Hauskn.) Largent, comb. nov. Plates 9-10
MycoBank MB 802809
≡ Entoloma umbraphilum Noordel. & Hauskn., Fungal Diversity 27: 134 (2007).
Pileus 8-25 mm broad, 2-4 mm high; opaque and not translucent nor hygrophanous; broadly convex to convex, umbilicate; tomentulose on the disc, squarrulose to appressed squamulose towards the margin, appressed fibrillose on the margin; at first disc very dark brown (7F2) elsewhere a bit lighter (7F4), then becoming dark brown (6-7F5-6), and eventually fading to medium brown (6-7E-F5-6), dull, striate nearly to the disc; margin incurved to decurved, striate, even becoming crenulate with age. Taste distinctly farinaceous, at times latent. Odor faintly but distinctly farinaceous. Lamellae 4.5-9 mm long, 1.25-5 mm high, adnate with decurrent tooth to subdecurrent, close to subdistant then distant in over-mature basidiomes, narrow to moderately broad, in some becoming broad, white to orange white to pallid (5A2) at first then more pinkish with basidiospore maturation; margin in places or entirely roughened to serrulate and distinctly brownish to blackish brown; 3 or 5-7 lamellulae between lamellae (in 2-4 rows, 2-4 short and 1-2 medium or 1 medium long). Stipe 8-30 mm long, 1.0-4.0 mm broad, equal, glabrous to faintly appressed fibrillose, a bit lighter than the pileus, medium brown (6-7E-F4-6), at times pale orange (5B3) at the apex, hollow and stiff but decays rapidly; basal tomentum scarce. Bruising reactions absent. Basidiospores typically cuboid in all views, at times 5-angled in dorsi-ventral view, angles distinct, mostly isodiametric but some may be heterodiametric, relatively small, 5.5-8.3 x 5.5-7.9 µm (x = 7.3 ± 0.50 x 6.7 ± 0.52 µm; E = 1.00-1.41; Q = 1.10 ± 0.09; n = 92/4). Basidia mostly 1-2- sterigmate, rarely 4-sterigmate, subclavate with the very base tapered, sterigma 2.1-4.8 µm; 22.5-40.6 x 6.5-11.0 µm (x = 28.6 ± 3.8 x 8.5 ± 0.9 µm; E = 2.8-4.5; Q = 3.4 ± 0.4; n = 40/3); base 1.6-4.5 µm. Cheilocystidia clavate, scattered to abundant, in clusters but not forming a sterile layer along the entire lamella, clavate, 23.3-53.5 x 5.1-10.7 µm (x = 37.5 ± 9.1 x 8.1 ± 1.8 µm; E = 2.3-7.9; Q = 4.8 ± 1.3; n = 16/2). Pleurocystidia absent. Lamellar tramal hyphae relatively slender and thus not broad, 40.8-144.1 x 2.2-22.0 µm (n = 26/3). Pileipellis badissima-type (laterally agglutinated hyphae abundant; slender cylindro-clavate collapsed on clavate to vesiculate pileocystidia), 80-135 µm eep on the disc. Pileocystidia cylindro-clavate to clavate to vesiculate, 22.7-68.6 x 4.8-17.3 µm (x = 36.3 ± 12.9 x 10.8 ± 3.6 µm; E = 1.6-9.4; Q = 4.0 ± 2.4; n = 19/2). Pileal tramal hyphae relatively short, subparallel, 32.5-113.1 x 4.4-15.4 µm. Stipitipellis a cutis. Basidiole clusters rare, 29.7-44.8 x 8.2-17.0 µm (n = 8/1). Stipe tramal hyphae subparallel, 31.5-191.7 x 4.4-15.4 µm (n = 11/2). Oleiferous hyphae scattered in the stipe trama. Lipoid Globules absent. Brilliant granules abundant and small in the basidia and in the pileal tramal hyphae. Pigmentation pale brown, uniformly intracellular in the cheilocystidia; very dark brown, intracellular, and in pigment-globules in the hyphae of the pileipellis, not soluble in 3% KOH or in water. Clamp connections absent in all tissues.
Ecology & distribution - Scattered in bare soft soil in areas protected and shaded by a dense tree overstory, Mossman National Park; in bare compacted soil shaded by a single tree (but protected by roots) in middle of Emmagen Creek Trail, Daintree National Park; late February to late March. Distinctive characters -Small broadly convex-depressed dark brown pileus; weakly decurrent or subdecurrent lamellae; basidiospores cuboid or 5-angled, isodiametric, and averaging <8.1 µm x <7.5 µm; badissima-type pileipellis with dark brown, intracellular, pigment globules; basidia small, typically 2-sterigmate; clavate, cheilocystidia with pale brownish pigment.
 
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