Fungalpedia – Note 2824, Aunstrupia
Aunstrupia. W.P. Wu & Y.Z. Diao.
Citation when using this data: Wenping Wu et al. 2022 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Chaetosphaeriaceae, Chaetosphaeriales, Sordariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Etymology: Named after Knud Aunstrup, the former vice president in Novozymes, who gave strong support for this study in early time.
Diagnosis: Similar to Sporidesmium on percurrently proliferated conidiophore and euseptate conidia, but phylogenetically belong to Chaetosphaeriaceae.
Saprobe on rotten leaves and petiole of palm. Colonies effuse, brown, hairy, often inconspicuous. Mycelium partly superficial, partly immersed in the substratum, composed of pale brown to brown, septate, branched hyphae,often forming network on the surface of the substrate. Teleomorph: Unknown. Anamorph: Conidiophoresmacronematous, mononematous, solitary or in small group, simple, cylindrical, straight or slightly flexuous, smooth, septate, dark brown. Conidiogenous cells integrated, terminal, cylindrical, lageniform, ampulliform, smooth, dark brown, with percurrent proliferations. Conidia acrogenous, solitary, dry, obclavate, rostrate, euseptate, sometimes constricted at the septa, brown to dark brown, become pale brown towards the apex, smooth, basal cell conic-truncate.
Ecology/Substrate/Host: Saprobe on decaying leaves and petioles of palm.
Geographical distribution: Tropical and subtropical areas, including China, Gabon, Indonesia, Java and Venezuela.
Notes: Aunstrupia is characterized by solitary conidiophores, holoblastic conidiogenous cells with doliiform or lageniform percurrent proliferations, and dark brown and euseptate conidia. Morphologically it resembles Sporidesmium on conidiophores, conidiogenous cells and conidia. However, phylogenetically it belongs to Chaetosphaeriaceae, while members of Sporidesmium belong to Sporidesmiaceae or Distoseptosoraceae (Ellis, 1948, 1958, 1971, 1976; Subramanian 1992; Ellis & Ellis 1997; Wu and Zhuang 2005; Luo et al. 2018). The genus is monotypic. The ITS sequences were also obtained from several other similar Sporidesmium species producing conidiophores with doliiform or lageniform proliferations and dark brown, obclavate or subcylindrical
conidia, but they phylogenetically belong to other family (unpublished).
Type species: Aunstrupia nodipes (Penz. & Sacc.) W.P. Wu & Y.Z. Diao.
Other accepted species: Species Fungorum – search Aunstrupia.
Figure 1 – Aunstrupia nodipes (Wu1311a). a Hyphae. b, d, e Conidiophores and conidiogenous cells with percurrent proliferations. c, i–l Conidia. h. Conidiophore with developing conidia. Scale bar: b 100 μm, c, e 20 μm, a, d, f–l 10 μm
References
Ellis MB 1948 – Clasterosporium and some allied dematiaceae–phragmasporae I. Mycol Pap 70:1–75
Ellis MB 1958 – Clastersporium and some allied dematiaceae–phragmosporae I. Mycol Pap 70:1–89
Ellis MB 1971 – Dematiaceous hyphomycetes. Kew: Commonwealth Mycological Institute 608 pp
Ellis MB 1976 – More dematiaceous hyphomycetes. Kew: Commonwealth Mycological Institute 507 pp
Ellis MB, Ellis JP 1997 – Microfungi on Land Plants. An Identification Handbook. Enlarged Edn, 868 pp, incl Slough: Richmond Publishing
Subramanian CV 1992 – A reassessment of Sporidesmium (hyphomycetes) and some related taxa. Proc Inidia Nat Sci Acad B 58:179–190
Wu WP, Zhuang WY 2005 – Sporidesmium, Endophragmiella and related genera from China. Fungal Diversity Research Series, 15:1–351
Entry by
Wenping Wu, R&D Center, Novozymes China, No. 14 Xin Xi Lu, Shangdi Zone, Haidian District, Beijing 100085, P.R. China
Published online 18 July 2026