Fungalpedia – Note 2446, Tingoldiago
Tingoldiago. K. Hiray. & Kaz. Tanaka.
Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Lentitheciaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on submerged culms. Sexual morph: Ascomata scattered, immersed to erumpent, uniloculate, depressed globose to conical, with a flattened base, glabrous, black, with a central, rounded ostiole. Peridium composed of hyaline to brown, small cells. Pseudoparaphyses numerous, cellular, hyaline, septate, immersed in gel matrix. Asci 8-spored, bitunicate, fissitunicate, cylindro-clavate, rounded at the apex, with or without a shallow chamber. Ascospores bi- to tri-seriate, clavate, straight, asymmetrical, the upper cell often broader than the lower one, smooth, thin-walled, usually surrounded by a large, expanding gelatinous sheath (Hirayama et al. 2010; Xu et al. 2020). Asexual morph: Undetermined.
Notes: Tingoldiago resembles Lindgomyces in ascospore characters and aquatic habitats (Hirayama et al. 2010). However, Tingoldiago differs by its depressed globose to mammiform ascomata with a wedge of palisade-like cells at the rim and graminicolous substrate. Tingoldiago was treated as a synonym of Lentithecium due to the lenticular, immersed to erumpent ascomata, cylindro-clavate asci and hyaline, 1-septate ascospores with sheath (Zhang et al. 2012b). Later, its generic placement was supported by molecular studies (Tanaka et al. 2015; Hyde et al. 2016b; Wanasinghe et al. 2018b).
Freshwater species Tingoldiago graminicola (type) has clavate, hyaline, 1-septate ascospores when young, becoming pale brown, 3-septate with age and with a fusiform gelatinous sheath which expands to form a long appendage in water (Hirayama et al. 2010). Other two freshwater species, T. clavata D.F. Bao et al. and T. hydei D.F. Bao et al., have several long or short, equatorial appendages, but lack the expanding sheath (Xu et al. 2020).
Type species: Tingoldiago graminicola K. Hiray. & Kaz. Tanaka
Other accepted species: Species Fungorum – search Tingoldiago.
Figure 1 – Tingoldiago graminicola (Material examined: JAPAN, Aomori, Hirosaki, Kadoke, Oowasawa River, on submerged culms of Phragmites japonica, 28 September 2002, KT 891, paratype). a, b, d, e, g from KT 891, paratype. c, f from culture of KT 891. a Ascomata on the host surface. b Section of ascoma. c Pseudoparaphyses. d Ascus. e Ascospore. f Ascospore with an elongate gelatinous sheath in Indian Ink. Scale bars: a = 500 μm, b = 100 μm, c–e = 10 μm, f = 50 μm
References
Zhang Y, Crous PW, Schoch CL, Hyde KD 2012b – Pleosporales. Fungal Divers 53:1–221.
Entry by
Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China
Published online 22 May 2026