Notes on the circumscription of the lichens Lecanora leprosa and L. sulphurescens (Lecanoraceae, lichenised Ascomycotina)

Lecanora leprosa and L. sulphurescens are two commonly misidentified pantropical lichens. A detailed circumscription is presented to help overcome such difficulties. Both species contain a chemosyndrome of chlorodepsidones based on gangaleoidin. The new depsidone chlorolecideoidin (methyl 2,4,9-trichloro-3,8-dihydroxy-1,6-dimethyl-11-oxo-11H-dibenzo[b,e][1,4]-dioxepin- 7-carboxylate) has been shown to be a minor component of both species.Lecanora leprosa und L. sulphurescens sind zwei häufig fehlbestimmte pantropische Flechten. Eine ausführliche Beschreibung der beiden Arten wird vorgelegt. Beide Arten enthalten ein auf Gangaleoidin basierendes Chemosyndrom von Chlordepsidonen. Das neue Depsidon Chlorlecideoidin (Methyl 2,4,9-Trichlor-3,8-dihydroxy-1,6-dimethyl-11-oxo-11Hdibenzo[ b,e][1,4]-dioxepin-7-carboxylat) wird beschrieben. Es kommt in beiden Arten als Nebeninhaltsstoff vor

New species of Parmeliaceae (lichenized Ascomycotina) from South America

The species Flavoparmelia quichuaensis Elix & T. H. Nash, Hypotrachyna divaricatica Elix & T. H. Nash, Hypotrachyna goiasii Elix & Nash, Hypotrachyna hypoalectorialica Elix & T. H. Nash and Relicina xanthoparmeliformis Elix & T. H. Nash are described as new to science

New species and new records of buellioid lichens from islands of the South Pacific Ocean

Buellia rarotongensis Elix from Rarotonga, Gassicurtia albomarginata Elix from Vanuatu and Monerolechia papuensis Elix from Papua New Guinea and are described as new to science. In addition, Buellia cranwelleae Zahlbr. and B. maunakeansis Zahlbr. are reported as new to Norfolk Island, Buellia bahiana Malme and Gassicurtia subpulcella (Vain). Marbach as new to Rarotonga, Buellia polyxanthonica var. isidiata Elix & Kantvilas, B. spuria var. amblyogona (Müll.Arg.) Elix and Cratiria chloraceus Marbach as new to Papua New Guinea and Orcularia elixii Kalb & Giralt as new to Hawai’i. Buellia maunakeansis is also reported from Australia

New species and new records of buellioid lichens (Physciaceae, Ascomycota) from New Zealand

Amandinea rangitatensis Elix & H.Mayrhofer, Buellia haywardii Elix, A.Knight & H.Mayrhofer, B. maungatuensis Elix & H.Mayrhofer, B. papanui Elix & H.Mayrhofer, and Tetramelas allisoniae Elix, H.Mayrhofer & Glenny are described as new to science. Rinodinella fertilis var. hypostictica (Elix) Elix is recorded for the first time from New Zealand. Tetramelas allisoniae also occurs in Tasmania

Additional taxa and new reports in the genus Pertusaria (Pertusariales, lichenised Ascomycotina) from Queensland and Norfolk Island (Australia)

Five new species, Pertusaria dayi, P. glabra, P. heinari, P. montoensis, P. stenospora and a new combination, Pertusaria aphelospora, are reported from Australia. In addition, Pertusaria phulhuangensis described from Thailand, P. karkarensis, described from Papua New Guinea, and P. virensica, described from Florida, are reported from Australia for the first time

Six new lichen species (Ascomycota) from Australia

Six lichens (Ascomycota) are described as new from Australia: Bapalmuia rotatilis P.M.McCarthy & Elix (Pilocarpaceae; southern New South Wales), Fellhanera incolorata P.M.McCarthy & Elix (Pilocarpaceae; southern New South Wales), Opegrapha gilmorei P.M.McCarthy & Elix (Opegraphaceae; Bass Strait, Tasmania), Protoparmelia ewersii Elix & P.M.McCarthy (Parmeliaceae; Northern Territory, South Australia), Ramboldia buleensis Elix & P.M.McCarthy (Lecanoraceae; southern New South Wales) and R. subplicatula Elix & P.M.McCarthy (central-western New South Wales)

Seven new species of Australian Pertusaria (Pertusariales, lichenised Ascomycota) from New South Wales

Seven new species, Pertusaria albula, P. dharugensis, P. ochrodigitula, P. pinnaculata, P. placocarpa, P. puttyensis and P. scabrida from New South Wales are reported as new to science

Three new Orientophila species (Teloschistaceae, Ascomycota) from eastern Asia

Three species, Orientophila fauriei, O. jungakimae and O. yokjidoensis, from South Korea are described as new, illustrated and compared with closely related taxa

Five new Caloplaca species (Teloschistaceae, Ascomycota) from Australia

Five new species of Caloplaca, C. mallacootensis, C. montenegrensis, C. rexii, C. rossii, and C. subgyalectoides are described, illustrated and compared with closely related taxa

Endemism in the genus Pertusaria (Pertusariales, lichenized Ascomycota) from the Galapagos Islands

This revision of Pertusaria in the Galapagos Islands documents twenty-four species, twenty-two being new to the archipelago. Secondary chemistry correlates well with morphology and anatomy and is particularly useful in distinguishing these taxa. Eight species are described as new to science, and seven are known only from the Galapagos: Pertusaria albineoides, P. cerroazulensis, P. darwiniana, P. medullamarilla, P. stictica, P. thioisidiata and P. xanthoisidiata. Pertusaria lueckingii is new, but it also occurs in Central America (El Salvador). Three new endemic varieties are described based on their chemistry: Pertusaria thioisidiata var. isidiogyrophorica, P. tejocotensis var. stictica and P. xantholeucoides var. thamnolica. In contrast with previous studies on other genera where rates of endemism of 8–10% were observed, in Pertusaria 30–37% of all species and 41–46% of all taxa are considered endemic