Fungalpedia – Note 2777, Isia
Isia. D. Hawksw. & Manohar.
Citation when using this data: Huang SK et al. 2021 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Incertae sedis, Sordariales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on leaves or isolated from soil. Sexual morph: Ascomata perithecial, solitary, immersed, membranaceous, globose, dark brown to black, ostiolate, with papilla. Peridium composed of membranaceous, brown to black cells of textura angularis. Asci 8-spored, unitunicate, cylindrical, evanescent. Ascospores uni-seriate, subglobose to ellipsoid, 0–1-septate, hyaline to pale brown, with dense irregular verrucose ornamentation on surface. Asexual morph: Undetermined (adapted from Hawksworth and Manoharachary 1978; Udagawa and Sugiy 1982).
Notes: Hawksworth and Manoharachary (1978) introduced Isia with I. neocaledoniensis as the type. It was transferred from Thielavia, and is similar to Copromyces and Jugulospora in having ascospores with verrucose ornamentation on the surface, although Copromyces has globose ascospores and Jugulospora has a conical pedicel on ascospores (Hawksworth and Manoharachary 1978). Therefore, this genus is accommodated in Sordariales genera incertae sedis (Hawksworth and Manoharachary 1978; Maharachchikumbura et al. 2016; Hyde et al. 2020).
Type species: Isia neocaledoniensis (C. Moreau) D. Hawksw. & Manohar., Trans. Br. mycol. Soc. 71(2): 334 (1978).
Other accepted species: Species Fungorum – search Isia.
Figure 1 – Isia neocaledoniensis (IMI-213076, holotype). a Herbarium material label. b Immersed ascomata on host. c Ascoma. d, e Peridium. f–h Asci. i–k Ascospores. Notes: d–h from permanent mount. Scale bars: b = 1 mm, c = 100 µm, d. f–h = 50 µm, e = 20 µm, i–k = 10 µm.
References
Udagawa S, Sugiyama Y 1982 – In: Reports on the cryptogamic study in Nepal (Tokyo), p 25.
Entry by
Shi-Ke Huang, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang 550025, China, The Engineering Research Center of Southwest Bio-Pharmaceutical Resources, Ministry of Education, Guizhou University, Guiyang 550025, Guizhou Province, China, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand, The Mushroom Research Centre, Guizhou University, Guiyang 550025, China
Published online 18 June 2026