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Halegrapha (Ascomycota: Graphidaceae), an enigmatic new genus of tropical lichenized fungi dedicated to Mason E. Hale Jr.

Published online by Cambridge University Press:  31 May 2011

Robert LÜCKING*
Affiliation:
Department of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, IL 60605-2496, USA.
Eimy RIVAS PLATA
Affiliation:
Department of Botany, The Field Museum, 1400 South Lake Shore Drive, Chicago, IL 60605-2496, USA. Department of Biological Sciences, University of Illinois-Chicago, 845 West Taylor Street (MC 066), Chicago, IL 60607, USA.
Klaus KALB
Affiliation:
Lichenologisches Institut Neumarkt, Im Tal 12, D-92318 Neumarkt, Germany.
Ralph S. COMMON
Affiliation:
534 Fenton St., Lansing, Michigan 48910, USA.
Alejandrina BARCENAS PEÑA
Affiliation:
Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Cd. Universitaria, C.P. 04510 Coyoacán, México, D.F.
Melizar V. DUYA
Affiliation:
Conservation International Philippines, Number 6 Maalalahangin Street, Teachers Village, Diliman 1101, Quezon City, Philippines.

Abstract

The new genus Halegrapha is introduced, with six species (five new species and one new combination) from Australia, the Philippines, Malaysia, Kenya, Mexico, and the United States: H. chimaera Rivas Plata & Lücking (type species; Philippines), H. floridana Common & Lücking (United States: Florida), H. intergrapha Hale ex Lücking (Malaysia), H. kenyana Kalb & Lücking (Kenya), H. mexicana A. B. Peña & Lücking (Mexico), and H. mucronata (Stirt.) Lücking (Australia). The genus resembles Graphis morphologically in the strongly carbonized, black lirellae and white-grey thallus strongly encrusted with calcium oxalate crystals, but has a Phaeographis-type hymenium (clear in two species) and ascospores, making it a ‘chimera’ between the two genera. Molecular data suggest the genus to be closely related to Phaeographis and allies but genetically distinct from any of the genera currently recognized, including Platygramme.

Type
Research Article
Copyright
Copyright © British Lichen Society 2011

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