Hypocreales » Bionectriaceae » Paracylindrocarpon

Paracylindrocarpon xishuangbannaensis

Paracylindrocarpon xishuangbannaensis Tibpromma & K.D. Hyde, in Tibpromma et al., Fungal Diversity: 10.1007/s13225-018-0408-6, [104] (2018)

Index Fungorum number: IF554535         Facesoffungi number: FoF04543

Sexual morph: Ascomata 225300 × 277.5295 lm (= 259 × 288.5 μm, n = 5), scattered to gregarious, globose to subglobose, superficial, flat at the base, conspicuous on the host surface, easy to remove, orange, dull, solitary, uniloculate, with pale brown papilla, with central ostiole. Peridium 3370.5 μm wide, composed of several layers of thick-walled, hyaline to pale brown cells of textura angularis. Hamathecium comprising 2.24 μm wide, cylindrical, filamentous, unbranched, guttulate, septate paraphyses. Asci 6795 × 1017 μm (= 72 × 12 μm, n = 20), 8-spored, unitunicate, cylindrical-clavate, with short pedicel, with J- apical ring. Ascospores 2741 × 38 lm (= 34.5 × 5.6 μm, n = 20), fusiform, conical towards both ends, 35-septate, not constricted at septa, hyaline, guttulate without mucilaginous sheath, smooth-walled. Asexual morph: Undetermined.

Culture characteristics: Ascospores germinating on PDA within 12 h. Colonies on PDA, yellowwhite, with irregular whorls, raised and rough on media surface, yellowbrown in reverse.

Habitat: Known to inhabit saprobic on dead leaves of Pandanus sp..


Known distribution: China.


Material examined: China, Yunnan Province, Xishuangbanna, Nabanhe, on Pandanus sp., 27 July 2016, PE Mortimer NBH04 (HKAS 96204, holotype); ex-type living culture, KUMCC 16-0144 = MFLUCC 17-0557.


GenBank Accession No: LSU: MH376732; ITS: MH388358; SSU: MH388326.

Notes: Here we provide first record sexual morphs of Paracylindrocarpon. Based on morphology P. xishuangbannaensis and P. nabanheensis both have fusiform, 3–5- septate, hyaline ascospores, that are not constricted at septa, while P. xishuangbannaensis has 72 × 12 µm, 8-spored asci, with 34.5 × 5.6 lm ascospores, but P. nabanheensis has smaller (6–)8-spored, 64.4 × 10.5 µm asci, with larger ascospores (41 × 6.5 µm). In a BLASTn search on NCBI GenBank, the closest matches of ITS sequence of KUMCC 16-0144 is Hyaloseta nolinae with 90% identity to the strain CBS 109837 (NR_156291).