Pleosporales » Lophiostomataceae » Lophiotrema

Lophiotrema neohysterioides

Lophiotrema neohysterioides M.E. Barr [as 'neohyserioides'], Mycotaxon 45: 208 (1992) Facesoffungi number: FoF 05217

Sphaeria hysterioides Schwein., Trans. Am. Philos. Soc. 4: 216, 1832.

Lophiostoma hysterioides (Schwein.) Sacc., Syll. Fung. 2: 709, 1883.

Lophiostoma hysterioides Ellis & Langl., J. Mycol. 4: 76, 1888.

Lophiotrema hysterioides (Ellis & Everhart.) Berl., Icon. Pyrenomyc. 1: 4, 1890.


Saprobic on dead branch of unidentified woody plant. Sexual morph: Ascomata 182–232 μm high, 205–274 μm diam., dark brown to black, scattered, gregarious, immersed to erumpent throughout the host tissue, globose to subglobose, uni-loculate, glabrous, coriaceous, ostiolate. Ostioles central, carbonaceous, with a crest-like opening. Peridium 15–39 μm thick, composed of several layers of dark brown to black, thin to thick-walled pseudoparenchymatous cells, arranged in a textura angularis, slightly thick at the sides and near the apex, and pale inwardly. Hamathecium comprising dense, 1–2 μm wide, branched, cellular pseudoparaphyses, anastomosing among and between the asci, embedded in a gelatinous matrix. Asci 73–90(–94) × 7.5–9.5 μm ( x = 84.5 × 8.5 μm, n = 20), 8-spored, bitunicate, fissitunicate, cylindric-clavate, short pedicellate, apically rounded with a minute ocular chamber. Ascospores 22.5– 24.5(–29) × 4–5 μm ( x = 24 × 4.7 μm, n = 25), overlapping bi-seriate, hyaline, fusiform, straight or slightly curved, 3-septate, with the primary septum median, normally constricted at median septum, smooth-walled, guttulate. Asexual morph: Undetermined.


Culture characters: Ascospores germinated within 12h in WA. Colonies on PDA reach 2.5 cm in diam after 4 weeks, Tobacco-Brown, with somewhat irregular margin, reverse similar, no pigment is reduced.


Specimen examined: CHINA, Guizhou Province, Guiyang City, on dead branch of unidentified woody plant, 2 September 2016, H.Y. Ran, SD-2016-8 (MFLU 18-2074, GZAAS 18-0005), living culture GZCC 18-0015.


Notes: This fungus is observed and described as in having clavate asci and hyaline, fusiform, three equidistant septate ascospores, which are similar to L. neohysterioides described in Tanaka and Harada (2003), as well as the sizes of asci and ascospores. Although a short branch is shown between these two strains, however, the comparison of each gene region between them was carried out, and the results showed that there are only 5 and 4 base differences in ITS and TEF1-α gene regions respectively, which cannot demarcate them as different species based on the recommendations of Jeewon & Hyde (2016). Therefore, the newly collected taxon is identified as L. neohysterioides, and reported as a new record from China.

Figure X. Lophiotrema neohysterioides. (MFLU 18-2074). a Ascomata semi-immersed to erumpent throughout the host surface. bVertical section through ascoma. c Section of peridium. d Pseudoparaphyses. e-g Long cylindrical asci. h–l Ascospores. Scale bars: b= 50μm, c, d =10 μm, e–g =20 μm, h–l =5 μm.


Reference: Hyde KD, de Silva NI, Jeewon R, Bhat DJ, et al. 2020 – AJOM new records and collections of fungi: 1-100. Asian Journal of Mycology 3(1), 22–294.


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