The lichen genus Usnea (Parmeliaceae) in the tropical Andes and the Galapagos: species with a red-orange cortical or subcortical pigmentation

Truong, Camille; Bungartz, Frank; Clerc, Philippe

doi:10.1639/0007-2745-114.3.477

Cited by 39 publications

(93 citation statements)

References 23 publications

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“…As in other recent revisions of Galapagos lichens the diversity was much greater than reported previously (Aptroot and Bungartz 2007, Aptroot and Sparrius 2009, Aptroot et al 2008, Bungartz 2008, Ertz et al 2011, Truong et al 2011, Knudsen and Bungartz 2013, 2014, Lücking et al 2013. As a consequence, lichens must now be considered among the most diverse organisms of Galapagos terrestrial biodiversity.…”

Section: Discussionmentioning

confidence: 75%

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

Bungartz¹,

Elix²,

Yánez-Ayabaca³

et al. 2015

Telopea

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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.

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Section: Discussionmentioning

confidence: 75%

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

Bungartz¹,

Elix²,

Yánez-Ayabaca³

et al. 2015

Telopea

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“…Clerc 1987aClerc , 1998Clerc , 2011bClerc & Herrera-Campos 1997;Herrera-Campos et al 1998;Ohmura 2001;Truong et al 2011) for detailed descriptions of the characters used in the delimitation of Usnea species. See previous publications (e.g.…”

Section: Methodsmentioning

confidence: 99%

“…Since Motyka's world monograph (1936Motyka's world monograph ( , 1938, taxonomic revisions have been carried out in Europe (Clerc 1987b(Clerc , 1992(Clerc , 2011bHalonen et al 1999), Macaronesia , North America (Clerc & Herrera-Campos 1997;Halonen et al 1998;Herrera-Campos et al 1998, 2001Clerc 2008), East Africa (Swinscow & Krog 1978, Eastern Asia (Ohmura 2001(Ohmura , 2012Ohmura et al 2010), Australia (Stevens 1999(Stevens , 2004, India (Awasthi 1986) and the polar regions (Walker 1985;Seymour et al 2007;Wirtz et al 2008;Lumbsch & Wirtz 2011). In the Neotropics, Usnea species are found abundantly in montane forests, especially close to the tree limit (Arvidsson 1991;Sipman 1995Sipman , 1999 or in open meso-habitats in the vicinity of the forest, such as isolated oldgrowth trees within pastures, forest borders (along roads) or deforested zones of matorral ). An ongoing taxonomic investigation of the diversity of Usnea species was recently started in South America and the Galapagos (Rodriguez et al 2011;Truong et al 2011;Truong & Clerc 2012). Numerous Usnea species, as currently understood, have a cosmopolitan distribution and the Usnea flora of South America integrates elements from North America, tropical Africa, Macaronesia and even Asia ).…”

Section: Introductionmentioning

confidence: 99%

PendulousUsneaspecies (Parmeliaceae, lichenized Ascomycota) in tropical South America and the Galapagos

2013

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The diversity of pendulous Usnea species in tropical South America (Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru and Venezuela) and the Galapagos Islands is discussed with reference to 23 species. Usnea crenulata Truong & Clerc is newly described. Usnea articulata, U. deformis, U. dimorpha, U. geissleriana, U. merrillii, U. perhispidella, U. sanctaeritae, U. subflammea and U. transitoria are newly reported for South America. Modern descriptions are provided for Usnea amabilis, U. arthroclada, U. dodgei, U. humboldtii and U. regia. We propose to reject the synonymy of U. hesperina with U. schadenbergiana, and the valid name for U. hesperina is therefore U. subgracilis. Distinct patterns of unidentified triterpenoids have been detected by thin-layer chromatography and are used to characterize several species within this group. The morphology, branch anatomy, chemistry, ecology and distribution of each species are given, together with an identification key.

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“…Sipman (B) and in Venezuela by M. E. Hale, Jr. (US). For a detailed description of the collection sites see Truong et al (2011). In addition, material from Brazil came mainly from the collections of SP and K. Kalb (private hb.).…”

Section: Methodsmentioning

confidence: 99%

The lichen genusUsnea(Parmeliaceae) in tropical South America: species with a pigmented medulla, reacting C+ yellow

Truong

Clerc

2012

The Lichenologist

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In tropical South America (Venezuela, Colombia, Ecuador, Peru, Bolivia and Brazil), we investigated the diversity of Usnea species with a pigmented, C+ yellow medulla. Four species are treated: the sorediate U. ceratina and U. entoviolata, the latter being new for South America, and the non-sorediate U. cristatula and U. flavorubescens, the latter being newly described here. A detailed description is provided for each species together with an identification key.

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The lichen genus Usnea (Parmeliaceae) in the tropical Andes and the Galapagos: species with a red-orange cortical or subcortical pigmentation

Cited by 39 publications

References 23 publications

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

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

PendulousUsneaspecies (Parmeliaceae, lichenized Ascomycota) in tropical South America and the Galapagos

The lichen genusUsnea(Parmeliaceae) in tropical South America: species with a pigmented medulla, reacting C+ yellow

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