Tuber indicum
Tuber indicum Cooke & Massee, Grevillea 20(no. 95): 67 (1892)
Facesoffungi number: FoF 04268
Saprobic on soil. Sexual morph: Truffle 1–5 cm diam., gregarious, hypogeous, subglobose, outer surface warted, blackish brown. Gleba elastic to solid, whitish at first, blackish at maturity, composed of numerous, thin, white, branching veins. Peridium and interscal tissue composed of dark brown cells of pseudoparenchymatous tissue. Asci 80–100 x 70–80 µm, 4-spored, unitunicate, indehiscent, globose, non-amyloid, interspersed within interscal tissue. Ascospore 25–30 x 17–20 µm, ellipsoid, aseptate, light brown to dark brown, ornamented with thick hairs. Asexual morph: Undetermined.
Specimen examined: China, Yunnan Province, Qiaojia County, Hetao Village, Peng Qiao, December 27 2014 (HKAS 85232)
GenBank submissions: ITS: MG871305, LSU: MG871340, TEF: MG980702, RPB2: MG980725
Notes: Tuber indicum is characterized by black spherical, hypogeous ascomata, globose asci and ellipsoid ascospores with thick hairs (Cooke and Massee 1892).
Morphology of Tuber indicum (HKAS 85232). a, b Habit of ascomata, c interscal tissue, c–f globose asci, g, h ellipsoid ascospores
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