Capnodiales » Teratosphaeriaceae » Austrostigmidium

Austrostigmidium mastodiae

Austrostigmidium mastodiae Pérez-Ort. & Garrido-Ben., Lichenologist 47(3): 146 (2015).

            Index Fungorum number: IF 811128; Facesoffungi number: FoF 09665, Fig. 1

Description: see Pérez-Ortega and Garrido-Benavent (2015).

Material examined: see Pérez-Ortega and Garrido-Benavent (2015).

Fig. 1 Austrostigmidium mastodiae (redrawn from Pérez-Ortega and Garrido-Benavent 2015). a Longitudinal section of a pseudothecium. b Immature ascus showing ocular chamber. c Mature ascus showing ascospores. d Periphyses. e Mature ascospores. f Pycnidia on Mastodia tessellate. g Longitudinal section of a pycnidium. h Conidiogenous cells. i Conidia. Scale bars: a = 25 µm, b, c, e, h, i = 5 µm, d  = 10 µm, g = 20 µm,

Importance and distribution

Austrostigmidium comprises only one species and is commensalistic. Austrostigmidium interacts with its host Mastodia tessellate (Verrucariaceae) in Antarctica, but does not cause any deformations or galls in the host thallus (Hawksworth 1982).



Etayo J, Sancho LG. 2008 Hongos liquenícolas del sur de Sudamérica, especialmente de Isla Navarino (Chile). Bibliotheca Lichenologica 98, 1– 302.                  

Hawksworth DL. 1982 Notes on British lichenicolous fungi: IV. Notes from the Royal Botanic Garden, Edinburgh 40, 129–151.

Pérez-Ortega S, Garrido-Benavent I, De Los Ríos A. 2015 Austrostigmidium, a new austral genus of lichenicolous fungi close to rock-inhabiting meristematic fungi in Teratosphaeriaceae. The Lichenologist 47, 143–156.


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