Fungalpedia – Note 2834, Kylindrochaeta
Kylindrochaeta. W.P. Wu & Y.Z. Diao.
Citation when using this data: Wenping W et al. 2022 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank
Classification: Chaetosphaeriaceae, Chaetosphaeriales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Diagnosis: Ascospore cylindrical-fusiform, hyaline to subhyaline, 7-septate. Conidiophores simple and terminated with conidiogenous cells, mono- or poly-phialidic, with sympodial extension. Conidia hyaline, cylindrical, multiseptate, asetulate.
Teleomorph: Ascomata superficial, broadly ovoid to obpyriform, papillate, dark brown, separate. Setae scattered, brown, multiseptate, slender, tapering to an attenuated apex. Ascomatal wall of textura angularis in surface view, composed of pseudoparenchymatic cells. Paraphyses unbranched, septate, hyaline. Asci cylindroclavate, short stalked, unitunicate, thin-walled, with 8 biseriately arranged ascospores. Ascospores cylindricalfusiform, sometimes inequilateral, sometimes one end slightly curved, hyaline to subhyaline, seven-septate.
Anamorph: Conidiophores produced in fascicles of three or more on the substrate, unbranched, dark brown becoming light brown towards the apex, multiseptate. Conidiogenous cell phialidic, terminal, cylindrical, mono or poly-phialidic with a single apical collarette and multiple lateral old conidiogenous loci that appear as refractive pegs; proliferation mostly sympodial, occasionally percurrent. Conidia hyaline, cylindrical, broadly rounded at the apex, with a truncate base, 3–6-septate, straight or diagonal, unevenly spaced (Adapted from Fernández and Huhndorf 2005).
Ecology/Substrate/Host: Saprobe on decorticated wood.
Geographical distribution: Costa Rica, Puerto Rico.
Notes: The new genus Kylindrochaeta is created to accommodate Chaetosphaeria lignomollis which is phylogenetically distinct from the type species of Chaetosphaeria and other known genera in Chaetosphaeriaceae. Morphologically it is also unique in produce hyaline, multiseptate and cylindrical to fusiform ascospore and conidia bearing no setulae, which are also different from other genera in the family (Fernández and Huhndorf 2005). Although the type material was not examined by us, the excelente documentation on both morphology and molecular data provided by Fernández and Huhndorf (2005) supports our treatment. Kylindrochaeta lignomollis (F.A. Fernández & Huhndorf) W.P. Wu & Y.Z. Diao, comb. nov., MycoBank MB842444
≡ Chaetosphaeria lignomollis F.A. Fernández & Huhndorf, Fungal Divers. 18: 27, 2005.
Description on the natural substrate: Ascomata 148–198 μm in diam., 178–218 μm in height. Setae scattered, brown, multiseptate, slender, 135–292 × 3.5–6.5 μm, tapering to an attenuated apex. Ascomatal wall 10.5–17.5 μm thick in longitudinal section. Paraphyses unbranched, septate, hyaline, 2–3 μm wide. Asci cylindro-clavate, shorts talked, 92.5–118 × 9.7–14 μm, unitunicate, thin-walled, with 8 biseriately arranged ascospores, apical ring 2.8–3.1 μm wide, 1.2–1.5 μm deep. Ascospores cylindrical-fusiform, 24–33 × 4.7–6 μm, hyaline to subhyaline, seven-septate, septa sometimes diagonal or at angles. Conidiophores cylindrical, multiseptate, 162–192 × 4–5.9 μm. Conidiogenous cell polyphialide with a single apical collarette and multiple lateral old conidiogenous loci. Conidia hyaline, cylindrical, broadly rounded at the apex, with a truncate base, 3–6-septate, unevenly spaced, 21– 28 × 6–7.3 on the substrate (Adapted from Fernández and Huhndorf 2005).
Typification: Puerto Rico, Caribbean National Forest, El Verde Research Area, 16-ha Grid, Luquillo Mts., 350 to 425 m, on wood fragment, 16 Jan 1997, S.M. Huhndorf, F.A. Fernández, SMH3015 (F; holotype).
Ecology/Substrate/Host: Saprobe on decorticated wood.
Geographical distribution: Costa Rica and Puerto Rico (Fernández and Huhndorf 2005).
Description and illustration: Fernández and Huhndorf (2005).
Notes: Kylindrochaeta lignomollis is fully described and illustrated by Fernández and Huhndorf (2005).
Type species: Kylindrochaeta lignomollis (F.A. Fernández & Huhndorf) W.P. Wu & Y.Z. Diao, Fungal Diversity 116: 93 (2022).
Other accepted species: Species Fungorum – search Kylindrochaeta.
References
Entry by
Wenping Wu, R&D Center, Novozymes China, No. 14 Xin Xi Lu, Shangdi Zone, Haidian District, Beijing 100085, People’s Republic of China
Published online 20 July 2026