Fungalpedia – Note 2368, Thaxteriellopsis
Thaxteriellopsis. Sivan., Panwar & S.J. Kaur.
Citation when using this data: Yuan HS et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Tubeufiaceae, Tubeufiales, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Notes: Thaxteriellopsis Sivan., Panwar & S.J. Kaur was introduced as a new genus by Sivanesan et al. (1976) based on the type species T. lignicola Sivan., Panwar & S.J. Kaur. Two more species were added to this genus but were transferred to Chaetosphaerulina (Crane et al. 1998; Wijayawadene et al. 2017). However, the type species T. liginicola has been retained in Thaxteriellopsis by Boonmee et al. (2011) and Lu et al. (2018d). Crane et al. (1998) suggested that multiseptate ascospores, often with one or few vertical septa, could be placed in Chaetosphaerulina, but they did not mention this in the generic description (Boonmee et al. 2011). After re-examination of the holotype (IMI197065), Boonmee et al. (2011) designated an epitype (MFLU 10-0057) and described both the sexual morph, found on a dead piece of wood of Zizyphus mauritiana, and the asexual morph produced in MEA culture. Thaxteriellopsis is characterized by non-ostiolate, setose, superficial, broadly sphaerical ascomata on a subiculum; bitunicate, cylindric-clavate, short pedicellate asci and hyaline, fusiform, phragmoseptate ascospores. It also produces a Moorella-like asexual morph (Subramanian and Sekar 1982). At present this genus is monotypic.
Type species: Thaxteriellopsis lignicola Sivan., Panwar & S.J. Kaur, Kavaka 4: 39 (1977) [1976]
Other accepted species: Species Fungorum – search Thaxteriellopsis.
Figure 1 – Thaxteriellopsis obliqus (NFCC-4429, holotype). a Ascomata on host. b Ascomata attached by lateral hyphae. c Section through ascoma. d Peridium. e–g Asci. g–p Ascospores. Scale bars: d = 200 µm, c = 100 µm, d = 50 µm, e–g = 20 µm, g–p = 10 µm
References
Sivanesan A, Panwar KS, Kaur SJ (1976) Thaxteriellopsis lignicola gen et sp. nov., a new Loculoascomycete from India. Kavaka 1:39–42.
Entry by
Hai-Sheng Yuan, CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, People’s Republic of China, University of the Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China
Published online 30 April 2026