Fungalpedia – Note 2710, Cylindronectria
Cylindronectria Etayo.
Citation when using this data: Meng QF et al. – Fungalpedia.
Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.
Classification: Hypocreales genera incertae sedis, Hypocreomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi.
Cylindronectria was introduced by Etayo (2017) based on its morphological characteristics to accommodate the single species C. cyanobactericola, which grows on Hypotrachyma in Ecuador. This genus is distinguished by its subcylindrical ascomata with a widened ostiole formed by apex breakdown, and a multi-layered perithecial wall. The asci are cylindrical, unitunicate, and 8-spored, exhibiting a KI+ blue reaction in the wall. The ascospores are uniseriate, hyaline to yellowish, subspherical to polygonal, and verruculose. Etayo (2017) placed Cylindronectria within Hypocreales. However, no sequence data is available, and its phylogenetic status remains unconfirmed, pending further studies.
Type species: Cylindronectria cyanobacteriicola Etayo, on Hypotrachyma (Etayo 2017).
Other accepted species: Species Fungorum – search Cylindronectria.
Figure 1 – Cylindronectria cyanobacteriicola redrawn from Etayo (2017). a Ascomata. b Immature asci. c immature and mature ascospores. Scale bars: a = 100 μm, b, c = 10 μm.
References
Etayo J 2017 – Hongos liquenícolas de Ecuador. Opera Lilloana, 50, 1–535.
Entry by
Meng QF, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand and School of Public Health, Zunyi Medical University, Guizhou 563000, China.
Published online 16 July 2026