Roccellinastrum
Specimen of Roccellinastrum neglectum, collected in New Zealand
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Pilocarpaceae
Genus: Roccellinastrum
Follmann (1968)
Type species
Roccellinastrum spongoideum
Follmann (1968)
Species

R. candidum
R. epiphyllum
R. flavescens
R. lagarostrobi
R. leprocauloides
R. neglectum
R. spongoideum

Roccellinastrum is a genus of lichen-forming fungi in the family Pilocarpaceae. It has seven species.

Taxonomy

The genus was circumscribed in 1968 by German lichenologist Gerhard Follman, with Roccellinastrum spongoideum assigned as the type species. This byssoid lichen (appearing wispy, like teased wool) was found growing on cactus spines in the fog oases of western Chile. Follman classified the genus in the family Chrysothricaceae, as he emphasized the taxonomic importance of the byssoid thallus, and the similarity of the apothecium and ascus structure to those in that family.[1] In 1983, Aino Henssen and colleagues emended the genus and placed it in the family Lecideaceae.[2] Roccellinastrum is now classified in the family Pilocarpaceae.[3]

Description

Species in genus Roccellinastrum are characterized by apothecia of diverse shape that lack a proper margin, and a developmental morphology corresponding to that of the order Lecanorales. They have small, amyloid asci containing eight spores, and branched paraphyses and excipular hyphae. Their wispy (byssoid) to spongy (spongiose) thallus is made of thick–walled hyphae. The phycobiont partners are green algae of the order Chlorococcales. The main secondary chemical produced by Roccellinastrum lichens is protocetraric acid. Other compounds, such as atranorin or squamatic acid, may also be present.[2]

Species

  • Roccellinastrum candidum (Müll.Arg.) Henssen (1982)[2]
  • Roccellinastrum epiphyllum Henssen & Vobis (1982)[2]
  • Roccellinastrum flavescens Kantvilas (1990)[4] – Tasmania
  • Roccellinastrum lagarostrobi Kantvilas (1990)[4] – Tasmania
  • Roccellinastrum leprocauloides Kalb & Aptroot (2018)[5] – Queensland, Australia
  • Roccellinastrum neglectum Henssen & Vobis (1982)[2]
  • Roccellinastrum spongoideum Follmann (1968)[1]

References

  1. 1 2 Follmann, G. (1967). "Die Flechtenflora der nordchilenischen Nebeloase Cerro Moreno". Nova Hedwigia (in German). 14: 243.
  2. 1 2 3 4 5 Henssen, Aino; Vobis, Gemot; Renner, Bernd (1982). "New species of Roccellinastrum with an emendation of the genus". Nordic Journal of Botany. 2 (6): 587–599. doi:10.1111/j.1756-1051.1983.tb01054.x.
  3. ↑ Wijayawardene, Nalin; Hyde, Kevin; Al-Ani, Laith Khalil Tawfeeq; Somayeh, Dolatabadi; Stadler, Marc; Haelewaters, Danny; et al. (2020). "Outline of Fungi and fungus-like taxa". Mycosphere. 11: 1060–1456. doi:10.5943/mycosphere/11/1/8. hdl:10481/61998.
  4. 1 2 Kantvilas, Gintaras (1990). "The genus Roccellinastrum in Tasmania". The Lichenologist. 22 (1): 79–86. doi:10.1017/S0024282990000044. S2CID 85829639.
  5. ↑ Kalb, K.; Aptroot, A. (2018). "Six new lichen species from Australia" (PDF). Australasian Lichenology. 82: 84–91.
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