Name: Trichaptum Murrill
Most Confident Observations:
Copyright © 2017 Dave W (Dave W)
Copyright © 2018 cmy610
Copyright © 2018 Pgrunow
Copyright © 2020 George Riner (mycogeo)
Version: 6
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First person to use this name on MO: Alan Rockefeller
Editors: Erlon Bailey, Joseph D. Cohen, GALL Alain

Nomenclature:

Rank: Genus

Status: Accepted

Name: Trichaptum

Author: Murrill

Citation: Bull. Torrey Bot. Club 31(11): 608 (1904)

Deprecated Synonyms: Hirschioporus

Misspellings: Trichchaptum

Classification:
Notes on Taxonomy: [Edit]

http://www.indexfungorum.org/....

These notes come from Trichaptum perenne Y.C. Dai & H.S. Yuan, sp. nov when it was merged with this name:

Mycobank: MB 513220

Carpophorum perenne, pileatum. Facies pororum brunneo-vinacea, pori rotundi vel angulares, 2-3 per mm. Systema hypharum dimiticum, hyphae generatoriae fibula- tae, hyphae skeletales contexti 3–6 μm in diam. Cystidia clavata, numerosa, tenuitunicata, incrustata, 12–17× 3.5– 5.5 μm. Sporae oblonge-ellipsoideae, hyalinae, IKI–, CB–, 4–5.2× 2–2.5 μm.
Type: China. Yunnan Prov., Baoshan County, Gaol- igongshan, Baihualing Nat. Res., alt. 1,800 m, on trunk of living Lithocarpus, 22.IX.2007, Yuan 3800 (holotype in IFP, isotype in BJFC and H).
Etymology: Perenne (Latin): referring to the perennial habit of the fungus.
Fruitbody Basidiocarps perennial, pileate to effused- reflexed, corky when fresh, becoming hard corky upon drying. Pileus triquetrous, projecting up to 6 cm, 10 cm wide and 5 cm thick at the base. Pileal surface greenish- grey to clay-buff when fresh, becoming clay-buff to fawn when dry, finely velutinate, slightly warted, azonate, often covered by mosses; margin obtuse. Pore surface vinaceous brown when fresh, slightly shining, becoming milky-coffee to snuff-brown or umber when dry, consistently shiningpores round to angular, occasionally elongate, 2–3 per mm; dissepiments thick, entire. Context brown, homogeneous, hard corky when dry, up to 5 mm thick. Tube layer grayish- yellow, distinctly paler than the poroid surface; tubes hard corky, up to 45 mm long.Hyphal structure Hyphal system dimitic; generative hyphae bearing clamp connections, IKI–, CB+ ; tissue darkening but otherwise unchanged in KOH.
Context Generative hyphae hyaline, thin- to slightly thick- walled, frequently branched, 2.5–4 μm in diam; skeletal hyphae yellowish-brown, thick-walled with a narrow to wide lumen, frequently branched, interwoven, 3–6 μm in diam; branched hyphae flexuous with a narrow lumen, mostly 2–4.5 μm in diam.
Tubes Generative hyphae hyaline, thin-walled, occasionally branched, 2–3.5 μm in diam; skeletal hyphae yellowish- brown, thick-walled with a wide lumen, frequently branched, loosely interwoven, 3–5.5 μm in diam; branched hyphae flexuous with a narrow lumen to subsolid. Cystidia short clavate, hyaline, thin-walled, apically encrusted, 12–17×3.5– 5.5 μm. Basidia rare, short clavate, with four sterigmata and a clamp connection at the base, 10–12×4–5 μm; basidioles common, similar in shape to basidia, but slightly smaller.
Spores Basidiospores rare, oblong ellipsoid, hyaline, thin- walled, smooth, more or less tapering to aipiculus, IKI–, CB–, (3.9–)4–5.2×(1.9–)2–2.5(–2.8) μm, L=4.68 μm, W=2.36 μm (n=43/3)
Additional specimens examined China. Yunnan Prov., Baoshan County, Gaoligongshan, Baihualing Nat. Res., alt. 1,800 m, on dead tree trunk of Quercus, 22.IX.2007, Yuan 3820, on fallen trunk of Lithocarpus, 22.IX.2007, Yuan 3781 & 3822, on trunk of living angiosperm tree, 23.IX.2007, Yuan 3892; Hainan Prov., Baoting County Qixianling Nat. Res., on trunk of living angiosperm tree, 27.IX.2007 Yang 885.
Remarks Trichaptum perenne differs from all other spe- cies of Trichaptum in its perennial basidiocarps, large pores and oblong ellipsoid basidiospores. It resembles T. vinaceibrunneum (Corner) T. Hatt. which also has a vinaceous brown hymenophore and large pores (2–3 per mm), but T. vinaceibrunneum has coloured and longer cystidia (25–45×5–7.5 μm) and allantoid basidiospores (6–7×1.2–1.8 μm; Corner 1987; Hattori 2001a).
The specimens of Trichaptum perenne available were sparsely sporulating, and basidiospores (a few) were found in the type only. All the specimens were collected in autumn, and the sporulation may be seasonal and occur in the spring.

These notes come from Trichaptum podocarpi Y.C. Dai when it was merged with this name:

Mycobank: MB 513221 Carpophorum annuum, resupinatum, facies pororum

cinnamomea vel roseo-bubalina; pori angulares, 1–3 per mm. Systema hypharum dimiticum, hyphae generatoriaefibulatae; hyphae skeletales subiculi 2.4–4 μm in diam. Cystidia abundantes, clavata, crassitunicata, incrustata, 28–70 × 5–8 μm. Sporae cylindricae vel allantoideae, hyalinae, IKI–, CB–, 5–7 × 1.8–2.2 μm.Type China. Hainan Prov., Lingshui County, Diaoluoshan Forest Park, on fallen trunk of Podocarpus, 29.V.2008, Dai 9853 (holotype in IFP, isotype in BJFC and H).
Etymology Podocarpi (Latin): referring to the host tree of Podocarpus.
Fruitbody Basidiocarps annual, resupinate, soft to soft leathery, without odour or taste when fresh, becoming hard corky upon drying, up to 50 cm long, 10 cm wide, and 0.3 cm thick. Pore surface cinnamon, fawn, vinaceous-buff to clay-pink buff when fresh, becoming brown when bruised, clay-buff to greyish-brown upon drying; sterile margin distinct, cream when fresh, pink-buff when dry, up to 1 mm wide; pores angular, 1–3 per mm, mostly 2 per mm; dissepiments thin, entire when juvenile, becoming strongly lacerate to irpicoid with age. Subiculum greyish- brown and soft leathery when dry, up to 0.5 mm thick; tube layer concolorous with pores; tubes corky when dry, up to 2.5 mm long.
Hyphal structure Hyphal system dimitic; generative hyphae bearing clamp connections, skeletal hyphae occasionally bearing simple septa; skeletal hyphae dominant, IKI–, CB+ ; tissue darkening but otherwise unchanged in KOH.
Subiculum Generative hyphae common, hyaline, thin- walled, frequently branched, 2–2.5 μm in diam; skeletal hyphae dominant, thick-walled with a wide or narrow lumen, occasionally simple septate, rarely branched, flexu- ous, loosely interwoven, 2.4–4 μm in diam.
Tubes Generative hyphae common, hyaline, thin-walled, frequently branched, 1.5–2.5 μm in diam; skeletal hyphae thick-walled with a narrow lumen, occasionally simple septate, more or less straight, loosely interwoven, 2–3 μm in diam. Cystidia most clavate, sometimes subulate, abundant, hyaline, thin-walled and smooth when immature, thick-walled and encrusted at the apex when mature, distinctly penetrating out of hymenium, 28–70 × 5–8 μm; cystidioles absent. Basidia clavate, with a basal clamp connection and four sterigmata, 11–14 × 3.5–4.5 μm; basidioles similar in shape to basidia, but slightly smaller.
Spores Basidiospores cylindric to allantoid, hyaline, thin-walled, smooth, IKI–, CB–, (4.5–)5–7(–7.2)×(1.5–) 1.8–2.2(–2.3) μm, L=6.15 μm, W=1.98 μm, Q=3.11 (n = 61/1).
Additional specimens examined China. Hainan Prov., Lingshui County, Diaoluoshan Forest Park, on rotten wood of Podocarpus, 24.XI.2002 Dai 4529; on fallen trunk of Podocarpus, 21.XI.2007 Dai 9356.
Remarks Trichaptum podocarpi belongs to the Trichaptum abietinum complex, together with T. abietinum (Pers.) Ryvarden, T. fuscoviolaceum (Ehrenb.) Ryvarden, T. laricinum (P. Karst.) Ryvarden and T. montanum T. Hatt. (Gilbertson and Ryvarden 1987; Ryvarden and Gilbertson 1994; Hattori et al. 2002; Dai et al. 2007a, b). Trichaptum podocarpi can be distinguished from these species in having totally resupinate basidiocarps and distinctly longer cystidia (2 times longer than basidia). Additionally taxa of the T. abietinum complex occur on Pinaceae (Gilbertson and Ryvarden 1987; Ryvarden and Gilbertson 1994), while T. podocarpi occurs on Podocarpaceae. Trichaptum podo- carpi is very similar to the resupinate form of T. byssogenum (Jungh.) Ryvarden in sharing vinaceous and strongly lacerate pores (Gilbertson and Ryvarden 1987). However, T. byssogenum has more or less ellipsoid basidiospores (4.8–6 × 2.6–3 μm), and its cystidia (14– 25 × 3–6 μm) are distinctly shorter than those in T. podocarpi (28–70 × 5–8 μm).
It appears that T. podocarpi only sporulates seasonally and presumably in the first wet season (May to June), because the two specimens collected in November of 2002 and 2007 appeared to be very fresh, but were almost sterile. The type collection of May 2008 was fertile.

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Created: 2007-01-12 16:26:59 CST (-0500) by Alan Rockefeller (Alan Rockefeller)
Last modified: 2020-02-16 07:15:04 CST (-0500) by Joseph D. Cohen (Joe Cohen)
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