Isalonactis

Isalonactis is a monotypic fungal genus in the family Roccellaceae.[1] It contains the single species Isalonactis madagascariensis, a saxicolous (rock-dwelling), crustose lichen found in Madagascar. Both the genus and species were described as new in 2014 by Damien Ertz, Anders Tehler, Eberhard Fischer, Dorothee Killmann, Tahina Razafindrahaja, and Emmanuël Sérusiaux. The type was collected on the Isalo Massif (in Isalo National Park) at an altitude of 851 m (2,792 ft); there, it was found growing on sheltered mesozoic sandstone cliffs. The genus name alludes to both Isalo Massif, the type locality, and the phylogenetic relatedness to genus Lecanactis.[2]

Isalonactis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Arthoniomycetes
Order: Arthoniales
Family: Roccellaceae
Genus: Isalonactis
Ertz, Tehler, Eb.Fisch., Killmann, Razafindr. & Sérus. (2014)
Species:
I. madagascariensis
Binomial name
Isalonactis madagascariensis
Ertz, Tehler, Eb.Fisch., Killmann, Razafindr. & Sérus. (2014)

Isalonactis madagascariensis has a thin, smooth thallus lacking a cortex, and with fine surface cracks, sometimes to the point of being areolate. The photobiont partner is trentepholioid (i.e., green algae in the genus Trentepohlia). The lichen contains psoromic acid.[2]

References

  1. Wijayawardene, N.N.; Hyde, K.D.; Dai, D.Q.; Sánchez-García, M.; Goto, B.T.; Saxena, R.K.; et al. (2022). "Outline of Fungi and fungus-like taxa – 2021". Mycosphere. 13 (1): 53–453 [90]. doi:10.5943/mycosphere/13/1/2. S2CID 249054641.
  2. Ertz, Damien; Tehler, Anders; Fischer, Eberhard; Killmann, Dorothee; Razafindrahaja, Tahina; Sérusiaux, Emmanuël (2014). "Isalonactis, a new genus of Roccellaceae (Arthoniales), from southern Madagascar". The Lichenologist. 46 (2): 159–167. doi:10.1017/S002428291300090X. hdl:2268/175060. S2CID 258994.


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