Search on : Taxa descriptions


 Add this item to the list   805593 Original description
Page number:130 
Remarks (internal):Nolanea claviformis is characterized by its concentrically ridged pileus, narrow crowded lamellae, and two types of pigment in the pileipellis. Refer to the comments sections for N. sinuolata and N. concentrica for discussions of species similar to N. claviformis.

Description type:Original description 
Description:Nolanea claviformis Largent & Aime, sp. nov. Plate 5
Mycobank MB 805593
Differs from all described species of Nolanea by its light brown, concentrically ridged pileus, orange-white lamellae, dark brown stipe, clavate cheilocystidia, and two types of pileus pigment.
Type: Guyana. Region 10: Upper Demerara-Berbice. Mabura Ecological Reserve: ~100 m northwest of Mabura field station at 5º09′19.0″N 58º41′58.9″W, elevation 100 m; in Dicymbe altsonii monodominant stand #1, 23 May 2011, Aime 4279 (BRG, holotype; PUL, isotype).
Pileus 7-25 mm diam, 7-17 mm high, campanulate-conical, concentrically ridged with a broad umbo, satiny light brown (5D4), felty, with appressed longitudinal silky fibrils under hand lens; margin suggestively striate, crimped, and felty. Lamellae 2 mm tall, narrow, adnate, close to crowded, orange white (5A2); margins broadly scalloped under hand lens; lamellulae numerous, difficult to count. Stipe 25-69 x 1.5-2.5 mm, equal, concolorous with pileus, silky; pruina scant at apex under hand lens. Basal mycelium appressed, white, extending upward. Context thin, hollow in stipe. Bruising reactions none. Odor none; taste none, mealy in texture.
Basidiospores distinctly 4-5(-6)-angled in all views, isodiametric in polar view, isodiametric to heterodiametric in profile view, 7.3-10.9 × 6.8-8.6 µm (mean = 9.0 ± 0.8 x 7.5 ± 0.48 µm, E = 1.0-1.4, Q = 1.20 ± 0.10; n = 31). Basidia clavate to cylindro-clavate, 28.2-42.5 x 9.5-13.0 µm (mean = 35.2 ± 4.8 x 10.7 ± 1.2 µm, E = 2.9-3.9, Q = 3.28 ± 0.4; n = 7), 4-sterigmate. Cheilocystidia abundant, forming a sterile layer, clavate, colorless, 41.4-57.6 × 8.7-15.7 µm (E = 4.0-4.8; n = 6). Pleurocystidia absent. Lamellar trama hyphae subparallel, cells relatively short and broad, 50.8-130.0 x 9-14.0 µm (n = 4). Pileipellis a cutis, 4-5 hyphal layers thick; hyphae 2.0-7.5 µm wide; terminal cells cylindric to cylindro-clavate, narrow. Pileal trama hyphae slightly inflated beneath the pileipellis; cells 65.9-128.2 x 8.7-14.6 µm, elsewhere up to 20 µm wide. Stipitipellis a cutis between scattered hymenial clusters at the apex; terminal cells in hymenial clusters clavate, colorless, similar to basidia but more narrow, 30.9-43.4 x 4.7-12.2 µm (E = 3.6-6.6, Q = 5.0; n = 5). Stipe trama hyphae long; cells 72.3-768.4 x 13.9-30.1 µm (n = 4). Refractive hyphae absent. Pigmentation minutely to distinctly incrusting the walls of the more slender hyphae in the pileal trama, faintly cytoplasmic in the pileipellis hyphae. Clamp connections absent.
Ecology, range, distribution -Scattered on litter of forest floor in Dicymbe altsonii forests on sandy soils; known only from the type locality at Mabura Ecological Reserve, Guyana.
Taxon name: