Fungalpedia – Note 870, Cryptosphaerella
Cryptosphaerella. Sacc.
Citation when using this data: Huang SK et al. 2021 (in prep.) – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank., Fig 1 g–k
Classification: Coronophoraceae, Coronophorales, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on wood. Sexual morph: Ascomata perithecial, scattered to gregarious, immersed to erumpent, coriaceous to membranaceous, brown to black, globose to subglobose, ostiolate, periphysate. Peridium composed of membranaceous, brown to hyaline cells of textura angularis to textura prismatica. Paraphyses absent. Asci polysporous, unitunicate, cylindrical, pedicellate, apex rounded, without apical ring, evanescent. Ascospores overlapping, hyaline, allantoid to cylindrical, aseptate, usually slightly curved, smooth-walled, guttulate. Asexual morph: Undetermined (adapted from Saccardo 1882b, Spegazzini 1909, 1922, 1926).
Notes – Cryptosphaerella was introduced similar to Cryptosphaeria (Diatrypaceae) in having ostiolate ascomata and allantoid, aseptate ascospores (Saccardo 1882a). Later, because of the polysporous asci, it was considered similar to Coronophora (von Höhnel 1907), but sequence data is not available for the type C. nitschkei. Mugambi & Huhndorf (2010) sequenced six ‘Cryptosphaerella’ species, C. celata, C. costaricensis, C. cylindriformis, C. elliptica, C. globosa and C. malindensis, which have ascomata lacking ostioles and with Quellkörper. Thus, Cryptosphaerella was transferred to Scortechiniaceae based on the phylogenetic analysis of these six species. Mugambi & Huhndorf (2010) believed that Quellkörper is a key feature of Scortechiniaceae, while the type of Cryptosphaerella does not have this character. Therefore, these six species are related to Scortechiniaceae, but do not belong to Cryptosphaerella. We have reassigned them based on morphology and phylogenetic result (see notes for Neocryptosphaerella and Pseudocryptosphaerella). Here, we transfer Cryptosphaerella to Sordariomycetes genera incertae sedis pending future work.
Type species: Cryptosphaerella nitschkei (Auersw.) Sacc., Syll. fung. (Abellini) 1: 186 (1882).
Other accepted species: Species Fungorum – search Cryptosphaerella.
Figure 1 – Scortechiniellopsis leonensis: a–b (IMI-58117, holotype); c–f (redrawn from Sivanesan 1974). a Material. b Hyphae on host. c Sectional view of Ascoma. d Hyphae of subiculum. e Ascus. f Ascospores; Cryptosphaerella nitschkei: g (IMI-K-M251354); h–i (NY-02934200); j–k (redrawn from Saccardo 1882b). g–h Immersed ascomata. i Ascoma cross section. j Ascus. k Ascospores; Scortechiniella similis: l–n (redrawn from von Arx & Müller 1954). l Sectional view of ascoma. m Ascus. n Ascospores. Scale bars: g = 1 mm, h = 500 µm, b–c, i, l = 200 µm, d, j, m = 50 µm, e, k, n = 20 µm, f = 10 µm.
References
Saccardo PA. 1882b – Sylloge fungorum omnium hucusque cognitorum. typis Seminarii 1, 1–766.
Spegazzini C. 1909 – Mycetes Argentinenses. Series IV. Anales del Museo Nacional de Historia Natural Buenos Aires 3(12), 257–458.
Spegazzini C. 1926 – Contribución al conocimiento de la flora micológica de las Sierras de Córdoba. Boletín de la Academia Nacional de Ciencias en Córdoba 29(2–3), 113–190.
von Höhnel F. 1907 – Fragmente zur Mykologie: IV. Mitteilung (Nr. 156 bis 168). Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften Math-naturw Klasse Abt I 116, 615–647.
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 14 September 2021