Biology:Roccellographaceae

From HandWiki
Short description: Family of lichen-forming fungi

Roccellographaceae
Roccellographa circumscripta Jymm.jpg
Roccellographa circumscripta, France
Scientific classification e
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Arthoniomycetes
Order: Arthoniales
Family: Roccellographaceae
Ertz & Tehler (2011)
Type genus
Roccellographa
J.Steiner (1902)
Genera

Dimidiographa
Fulvophyton
Roccellographa

Roccellographaceae is a family of lichen-forming fungi in the order Arthoniales.[1] It contains three genera: Dimidiographa, Fulvophyton, and Roccellographa.

Taxonomy

The family was circumscribed by Damien Ernst and Anders Tehler in 2011 after a phylogenetic study of the Arthoniales. It is named after its type genus, Roccellographa. Before this publication, this genus was monotypic, containing the single species Roccellographa cretacea, endemic to Socotra and Somalia.[2] Three species have since been added to Roccellographa.

Genus Fulvophyton was created to contain species formerly placed in Sclerophyton, but differing from the generic type by having rounded to ellipsoid, often white pruinose ascomata, and a hyaline or pale hypothecium. Genus Dimidiographa differs from other Roccellographaceae genera in having a blackened (carbonized) excipulum (the ring-shaped layer surrounding the hymenium).[2]

Description

Members of the Roccellographaceae have a thallus that is either crustose or somewhat fruticose. The photobiont partners are green algae in genus Trentepohlia. The ascomata are either point-like (punctiform) or comma-like (lirelliform). The hypothecium, a layer of tissue immediately below the hymenium, is hyaline or pale brown. The asci (spore-bearing cells) are cylindrical to club-shaped (clavate). Paraphysoids (refers to structures that form from the stretching of tissues present before the asci develop) are branched or anastomosed. Ascospores are usually hyaline (rarely brown), spindle-shaped (fusiform) or oblong, and often have a gelatinous covering.[2]

Genera

References

  1. 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. 
  2. 2.0 2.1 2.2 2.3 2.4 Ertz, Damien; Tehler, Anders (2010). "The phylogeny of Arthoniales (Pezizomycotina) inferred from nucLSU and RPB2 sequences". Fungal Diversity 49 (1): 47–71. doi:10.1007/s13225-010-0080-y. 
  3. Steiner, J. (1903). "Bearbeitung der von O. Simony 1898 und 1899 in Südarabien, auf Sokotra undden benachbarten Inseln gesammelten Flechten" (in de). Denkschriften der Akademie der Wissenschaften (Wien) Mathematisch-naturwissenschaftliche Klasse 71: 93–102. 

Wikidata ☰ Q28872120 entry