Search on : Taxa descriptions


Page number:106 
Remarks (internal):Identification of the Taiwan specimens was confirmed by intercompatibility between Wu 910724-6 and LY 12276 (an authenticated culture of D. tristicula). 
Description type:Non-original description 
Description:Duportella tristicula (Berk. & Br.) Pat. in Reink., Philippine J. Sci. 17:364. 1920 Figures. 1 E & 4
Corticium tristiculum Berk. & Br., J. Linn. Soc. 14:71.1875. = Hymenochaete tristiuscula (Berk. & Br.) Mass., J. Linn. Soc. 27:111. 1890.= Peniophora tristicula (Berk. & Br.) Boid. & Lanq., Bull. Soc. Linn. Lyon (Numéro Spécial): 50. 1974. = H. castanea Wakef., Kew Bull. Misc. Inf. p.260. 1914.
=Duportella velutina Pat., Philippine J. Sci. 10:87. 1915. = Hymenochaete velutina (Pat.) Lloyd, Myc. Writ., 6, myc. notes 63:966. 1920.
=D. raimundoi Pat., Philippine J. Sci. 10:88. 1915.
Fruit body effused, adnate, membranaceous, 80-170 µm thick in section. Hymenial surface grayish brown, smooth, cracked when old; margin brown, usually an immature zone, rather determinate.
Hyphal system dimitic; generative hyphae nodose-septate. Subiculum bi-layered. Basal layer with compact texture, 20-40 µm thick; generative hyphae horizontal in orientation, brownish in color, glued together, 3-5 µm diam, slightly thick-walled. Medullary Iayer with fairly dense texture; generative hyphae hyaline or subhyaline, fairly distinct, 2.5-4.0 µm diam, thin-walled. Subhymenium somewhat differentiated and thickening. Pseudosetae very numerous, mostly immersed, forming a palisade in subiculum and subhymenium, perhaps originating in the subiculum, may be horizontal in deep subiculum, vertical elsewhere, brown, tubular or narrowly cylindrical, up to more than 100 µm long, 3-5 µm diam, with 0.7-1.5 µm thick walls, apically encrusted, with secondary septa. Gloeocystidia numerous, immersed or occasionally emergent, perhaps originating in the subiculum, bladder-like, fusiform, or rarely clavate, usually bearing a small central projection at apex, with oily contents, SA +, with 1-2 µm thick walls. Basidia narrowly clavate, 28-38 x 5-6 µm, 4-sterigmate. Basidiospores suballantoid, smooth, thin-walled, 10.0-12.5 x 3.7-4.2 µm (X =11.39 ± 0.75 x 3.90 ± 0.15 µm, n = 30, from spore-print of Wu 910724-6), usually with minute oil-drops, IKI-, CB-.
Specimens examined: Taiwan. Taipei: Yangmingshan, alt. 400 m, on branch of angiosperm, 24.VII.1991 Wu 910724-2 (LY, N.M.N.S.), Wu 910724-6 (N.M.N.S.).
Sri Lanka (Ceylon). Central province: On dead twigs, no.994 (holotype of Corticium tristiculum, K). Philippines. Laguna: Los Ba˱os, on dead limbs on ground, 1.XII.1912, Baker 532; on dead limbs of Tamarindus indicus, 30.1.1913, Baker 764; on dead Gliricidia sepium, 15.XII.1913, Baker 2167; on branches of Tamarindus indicus, 25.1.1913, Baker 725. Mt. Maquiling, near Los Ba˱os, on dead fallen limbs, 24.V.1913, Baker 1183 (above-listed Philippine specimens are syntypes of Duportella velutina). Mt. Maquiling, near Los Bafios, on dead Gliricidia sepium, XII.1913, Baker 25 (det. by Patouillard as D. velutina). Los Ba˱os, on culm of dead bamboo, XII. 1912, Baker 567 (holotype of D. raimundoi) (listed Philippine specimens are deposited at FH). Nigeria. Ibandan: on palm leaf, 1914, Farquharson 5; on branch of dead Theobroma cacao, 1914, Farquharson 33 (both are syntypes of Hymenochaete castanea, deposited at K).
Distribution: Sri Lanka (Berkeley and Broome 1875), Philippines (Patouillard 1915), Australia (Cunningham 1963), Nigeria (Wakefield 1914), South Africa (Talbot 1951), Pakistan (Boidin and Ahmad 1963), R.C.A., Gabon, Uganda, Reunion Island, Singapore (Boidin et al. 1991) and Taiwan. Apparently pantropical.
Taxon name: