Asterinales » Hemigraphaceae » Hemigrapha

Hemigrapha asteriscus

Hemigrapha asteriscus (Müll. Arg.) R. Sant. ex D. Hawksw., Kew Bull. 30(1): 191 (1975).

≡ Melanographa asteriscus Müll. Arg., Flora, Regensburg 65(33): 519 (1882).

           Index Fungorum number: IF 530383; Facesoffungi number: FoF 02312, Fig. 1

Description: see Diederich and Wedin (2000); Dai et al. (2018).

Material considered: see Diederich and Wedin (2000); Dai et al. (2018).

Fig. 1 Hemigrapha asteriscus (G 00292584, syntype). a Herbarium material. b, c Appearance of ascomata on host substrate. d Section through ascomata. e–h Asci with ascospores. i, j Ascospores. Scale bars: b, c = 500 μm, d–h = 50 μm, i, j = 5 μm.

Importance and distribution

Hemigrapha comprises commensalistic taxa that grow on the thallus of the cyanobacterial morph of lichens and have close biotrophic association with the cyanobacterial photobiont. Some species grows on foliicolous lichens but most fungal structure of the hosts is unaffected and they take least benefit from algal photosynthates in order to support their mycelial structures (Cáceres and Lücking 2000). Hemigrapha comprises nine species known on thallus of Sticta canariensis (Lobariaceae), Nephroma australe (Nephromataceae), Phylloporis phyllogena (Strigulaceae), thallus of Byssoloma minutissimum (Pilocarpaceae), Pseudocyphellaria argyracea (Lobariaceae) and Strigula maculata (Strigulaceae). Hemigrapha is reported from Central America (Costa Rica), Europe (United Kingdom), Oceania (New Zealand, Papua New Guinea), South America (Brazil) and The United States (Florida).

 

References

Cáceres M, Lücking R. 2000 – Three new species and one new combination of foliicolous lichens and lichenicolous fungi from the Atlantic Rainforest in Pernambuco state, Brazil. Nova Hedwigia 70, 217–226.

Dai DQ, Tang LZ, Liu C, Wang HB, Hyde KD. 2018–Studies on Parmulariaceae I. A phylogeny based on available sequence data; introducing Parmulariales ord. nov., and Hemigraphaceae. Melaspileellaceae and Stictographaceae fam. nov. Phytotaxa 369, 063–079.

Diederich P, Wedin M. 2000 – The species of Hemigrapha (lichenicolous Ascomycetes, Dothideales) on Peltigerales. Nordic Journal of Botany 20, 203–214.

Eriksson OE, Baral HO, Currah RS, Hansen K, Kurtzman CP, Læssøe T, Rambold G. (eds). 2001 – Outline of Ascomycota 2001. Myconet 7,1–88.

Ertz D, Diederich P, Lawrey J, Berger F et al. 2015 – Phylogenetic insights resolve Dacampiaceae (Pleosporales) as polyphyletic: Didymocyrtis (Pleosporales, Phaeosphaeriaceae) with Phoma-like anamorphs resurrected and segregated from Polycoccum (Trypetheliales, Polycoccaceae fam. nov.). Fungal Diversity 74, 53–89.

Hawksworth DL. 1975 – Notes on British lichenicolous Fungi, I. Kew Bulletin 30, 181–203.

Hyde KD, Jones EBG, Liu JK, Ariyawansa H et al. 2013 – Families of Dothideomycetes. Fungal Diversity 63, 1–313.

Inácio CA, Cannon PF. 2008 –The genera of the Parmulariaceae. CBS Biodiversity Series vol. 8. Utrecht, Netherlands: CBS Biodiversity Centre, 196 p.

Lumbsch HT, Huhndorf SM. 2010 – Outline of Ascomycota 2009. Myconet 14, 1–64.

Wijayawardene NN, Crous PW, Kirk PM, Hawksworth DL et al. 2014 – Naming and outline of Dothideomycetes–2014 including proposals for the protection or suppression of generic names. Fungal Diversity 69, 1–55.

 

Recent News

Recent paper to be published

Recent Genus

Nothocladosporium
Phillipsiella
Curreya

Recent Species

Nothocladosporium syzygii
Phillipsiella atra
Curreya conorum