Glomerellales » Plectosphaerellaceae » Acrostalagmus

Acrostalagmus annulatus

Acrostalagmus annulatus (Berk. & M.A. Curtis) Seifert, in Réblová, Gams & Seifert, Stud. Mycol. 68: 186 (2011)

Index Fungorum number: IF518663         Facesoffungi number: FoF05253


Basionym: Stilbum annulatum Berk. & M.A. Curtis, in Berkeley, Grevillea 3(no. 26): 63 (1874)


Sexual morph: Undetermined. Asexual morph: Hyphomycetous. forming rounded pale reddish brown slimy heads, oval. Conidiophore axis erect, repeatedly branched, pale reddish brown at the base and hyaline at the apex, full-grown conidiophore stipes 4–5 μm wide at the base, tapering to 3 μm. Conidiogenous cells phialidic 9–26 × 2–3.5 μm, narrowly flask-shaped in the widest part, arising in whorls of 1–5 at several levels along the main stipe and its branches. Conidia 6–8 × 3–4 μm ( = 7.4 × 3.6 μm, n = 30), hyaline, subglobose to cylindrical, single-celled.


Culture characteristics: Conidia germinated on MEA. On MEA colonies are appressed, circular, flat surface, edge entire, first cream then become dark brown and rise in the centre with mycelium, reverse brown reaching 2 cm in 2 weeks at 18 °C.


Host and Habitat: Saprobic on Ananas comosus, Brassica sp., Glycine max, G. soja, Luffa acutangula, decayed fruits of unidentified plants, dead stem as well as soil and roots (Giraldo and Crous 2019; Farr and Rossman 2021).


Known distribution: Brazil, Cuba, Japan, Mexico, Sierra Leone, Thailand and Venezuela (Giraldo and Crous 2019; Hyde et al. 2019; Farr and Rossman 2021).


Material examined: THAILAND, Chiang Mai Province, Doi Suthep, 22 December 2015, decaying fruits of unknown species, S.C. Jayasiri, C 132 (MFLU 16-0952), living culture MFLUCC 16-0612.


GenBank Accession No: ITS: MK607614, LSU: MK607617, RPB2: MK607616, SSU: MK607615.