Additions to thePlacopsismycobiota (Trapeliaceae, Ascomycota) of southern South America, with notes on new records (includingAspiciliopsis macrophthalma), and a revised regional key to the species

Galloway, D. J.

doi:10.1017/s0024282910000460

Cited by 10 publications

(15 citation statements)

References 17 publications

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“…The lichen genus Placopsis (Agyriaceae, lichenized Ascomycota) is a widespread early colonizer of rock surfaces and bare soils, such as recently deglaciated areas, especially in subantarctic regions, with 22 species currently known from southern South America (Follmann et al, 1991;Galloway, 2002Galloway, , 2010. Placopsis species, although having a green algal primary photobiont, also have cyanobacteria in cephalodia and are efficient nitrogen fixers.…”

Section: Introductionmentioning

confidence: 99%

“…Placopsis pycnotheca I. M. Lamb is known from southern Argentina, the Juan Fernández Archipelago (Chile), from latitude 32 • S to 54 • S in the Chilean Andes and from South Georgia (Galloway, 2002(Galloway, , 2010. It is characterized by its crustose terricolous thallus, composed of swollen areoles and squamules, encrusting sand, soil and small pebbles; and by the simple, subglobose to finger-like isidia.…”

Section: Introductionmentioning

confidence: 99%

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Anatomical, morphological and ecophysiological strategies in Placopsis pycnotheca (lichenized fungi, Ascomycota) allowing rapid colonization of recently deglaciated soils

Rı́os

Raggio

Pérez‐Ortega

et al. 2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anatomical, morphological and ecophysiological strategies in Placopsis pycnotheca (lichenized fungi, Ascomycota) allowing rapid colonization of recently deglaciated soils

Rı́os

Raggio

Pérez‐Ortega

et al. 2011

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…However, they are scattered over the genera Flavoparmelia (when the doubtful Venezuelan records of F. gerlachei are excluded), Himantormia, Hypotrachyna, Melanohalea, Parmelia, and Xanthoparmelia, and one would suspect these to represent marginal evolutionary processes in different lineages. This is a strong contrast to evolution in Menegazzia (Bjerke 2005), many genera within Pannariaceae (Jørgensen 2003;Elvebakk et al 2010), Bunodophoron (Wedin 1993), Placopsis (Galloway 2010), Pseudocyphellaria (Galloway 1992) and several others. These genera have high numbers of South American endemics distributed in southern humid areas, with related species in other austral areas with similar climates.…”

Section: Phytogeography and Evolutionmentioning

confidence: 87%

Parmelioid lichens (Parmeliaceae) in southernmost South America

Elvebakk¹,

Bjerke²,

Støvern³

2014

Phytotaxa

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The parmelioid lichens is a speciose group in the Parmeliaceae family, and the biodiversity of this group is still far from completely understood in many regions of the world. One such region is southernmost South America, viz. the parts of Chile and Argentina south of 49 and 46° S, respectively, and the Falkland Islands. Based on examination of 366 herbarium samples and a study of relevant literature, 51 species of parmelioid lichens are here accepted for southernmost South America, whereas 12 species reported from the area during the last decades have been rejected. Xanthoparmelia austrosorediata and X. tehuelchorum are described as new to science here. In addition, six species are reported as new to southernmost South America, three of which are new to Chile, whereas an additional five species are new to the Chilean region of Magallanes. The apothecia of Flavoparmelia gerlachei and Xanthoparmelia subplittii are described for the first time here. Xanthoparmelia is the largest genus in the area with 21 species, two still undescribed, followed by Hypotrachyna with 11 and Parmelia with five. The lichenologically least explored part of the area is the Patagonian steppe and adjacent areas. Half of the total number of species, including all Xanthoparmelia species, is concentrated to these arid areas, and the majority of these are species which are endemic to South America. Hypotrachyna species are characteristic of the humid evergreen forest zone along the coast, and most of these species have wide pantropical or subcosmopolitan distribution ranges and few records from the present study area. The strongest focus of the present study is the National Park Torres del Paine in Magallanes, and a total of 35 parmelioid species are reported from this area here. Several of these have had their only known localities in southernmost South America destroyed by the 2011/2012 forest fire. Exploration history, frequency, distribution and evolutionary patterns are also discussed for single species or groups of species.

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“…Especie presente en Chile entre los paralelos 37° a 43° S y en el archipiélago de Juan Fernández, sobre rocas ácidas desde el nivel del mar hasta casi los 2.000 m s.n.m. (Galloway 2002(Galloway , 2010. También ha sido reportada para Argentina (Calvelo & Liberatore 2002), Tristan da Cunha (Lamb 1947) y Nueva Zelandia (Jørgensen 1979, Galloway 2002.…”

Section: Placopsis Fuscidula Im Lamb Ex Räsänenunclassified

“…Nyl. Esta es una especie de amplia distribución en el Hemisferio Sur, pero especialmente abundante en el cono sur de Sudamérica entre los paralelos 37° a 55° S (Galloway 2002(Galloway , 2010. Se desarrolla sobre rocas y grav a cerca de corrientes de agua, morrenas glaciares o cualquier zona donde la roca se encuentre expuesta, con un rango altitudinal que va desde el nivel del mar hasta casi los 2000 m s.n.m.…”

Section: Placopsis Fuscidula Im Lamb Ex Räsänenunclassified