Fungalpedia – Note 429, Amundsenia

 

Amundsenia Søchting, Garrido-Ben., Arup & Frödén 

Citation when using this data: Tibpromma et al. 2024 (in prep.) – Fungalpedia, extreme-tolerant fungi.

Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1 

Classification: Teloschistaceae, Teloschistales, Lecanoromycetidae, Lecanoromycetes, Pezizomycotina, Ascomycota, Fungi.

Amundsenia was introduced by Søchting et al. (2014), with Amundsenia austrocontinentalis as the type species. Based on the phylogeny of Søchting et al. (2014), this genus represents a monophyletic clade within Xanthorioideae. This genus is characterized by saxicolous thallus with crustose, orange; sparse apothecia, dispersed, orange and polardiblastic spores with small and short spore septum while, apothecia and thalli contain parietin (dominant) and small proportions of teloschistin, fallacinal, parietinic acid and emodin (Chemosyndrome A of Søchting (1997) (Søchting et al. 2014). Recently, only Amundsenia approximata has been found in the Arctic region, whereas  A. austrocontinentalis is fairly common (Søchting et al. 2014).

Type species: Amundsenia austrocontinentalis Garrido-Benavent, Søchting, Pérez-Ortega & Seppelt

Other accepted species: Species Fungorum – search Amundsenia 

 

Figure 1 – Amundsenia austrocontinentalis (MAF-Lich 18901). Scale bars: a = 0.5 mm. Redrawn from Søchting et al. (2014).

 

References

Søchting U, Garrido-Benavent I, Seppelt R, Castello M, et al. 2014 – Charcotianaand Amundsenia, two new genera in Teloschistaceae (lichenized Ascomycota, subfamily Xanthorioideae) hosting two new species from continental Antarctica, and Austroplaca frigida, a new name for a continental Antarctic species. Lichenologist (London, England) 46(6), 763–782. 

Søchting U. 1997 – Two major anthraquinone chemosyndromes in Teloschistaceae. Bibliotheca Lichenologica 68, 135–144.

 

Entry by

Priyashantha AKH, Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand 

 

(Edited by Saowaluck Tibpromma, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)

 

Published online 2 December 2024

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