Diaporthomycetidae families incertae sedis » Conlariaceae » Conlarium

Conlarium dupliciascosporum

Conlarium dupliciascosporum F. Liu & L. Cai
Index Fungorum number: IF565188

Sexual morph: Ascomata perithecioid, superficial, or partially immersed, coriaceous, dark brown to black, gregarious, smooth, globose to subglobose, 200–250 µm diam, 175–250 µm high, with cylindrical neck, straight or slightly flexuous, 125–175 µm long, 50–75 µm wide. Peridium comprising several layers of textura angularis cells, which are usually darker externally and pale internally, 15.5–28.5 µm thick. Paraphyses 4 µm wide, hyaline, branched, septate, not embedded in a matrix. Asci eight-spored, unitunicate, short pedicellate, cylindrical, 126–151.5 ´ 11–14 µm, with a large, bipartite apical ring, 5 µm wide, 4 µm high. Ascospores biseriate, fusiform, straight or cymbiform, 0–5-septate, hyaline, guttulate, 29–32 ´ 5–7 µm, with or without globose or papillary appendages at one or each end of the ascospores. Asexual morph: Colonies reach 8 µm diam after 2 mo, dark brown to black, planar, smooth. Conidiophores 18.5–34.0 ´ 2.0–5.4 µm, micronematous or semi-macronematous, mononematous, septate or aseptate, unbranched or irregularly branched, straight or flexuous, hyaline, becoming brown with age. Conidiogenous cells determinate, doliiform, cylindrical, 5.0–10.0 ´ 3.0–6.0 µm. Conidia brown, muriform, irregularly globose or subglobose, constricted at the septa, 15.5–35.0 ´ 11–26.5 µm. Chlamydospores not observed.

Specimen examined: CHINA, Guangdong Province, Zhaoqing, Dinghu Mountain, on submerged wood in a stream (Liu et al. 2012).

Fig. Conlarium duplumascospora (from holotype). a. Ascomata on natural substratum. b. Peridium. c. Paraphyses. d–f. Asci. Note the bipartite refractive apical ring. g–h. Upper and reverse colony after 2 mo cultivation. i–j. Ascospores. Note the polar appendages (arrowed). k. Conidiophore bearing mature (left) and immature (right) conidium. l–m. Mature conidia. Scale Bars: a = 100 µm; b–f, i–m = 10 µm; g–h = 10 µm (Photo grabbed from Liu et al., 2012)

References:
Liu, F., Hu, D.-M., & Cai, L. (2012). Conlarium duplumascospora gen. et. sp. nov. and Jobellisia guangdongensis sp. nov. from freshwater habitats in China. Mycologia, 104(5), 1178–1186.

 

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