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Lichens Of Madagascar
Little work has been done on the lichens of Madagascar, so while over 500 species of lichens have been documented, more are expected. Madagascar can be divided into two major habitats that can be associated with lichen distribution. Wet tropical areas of siliceous bedrock make up approximately two-thirds of the country, and are where most of the lichens have been documented. Dry tropical areas of granitic and limestone bedrock make up the other one-third of the country with just over 20 species documented in these habitats. The following table lists the species known from the dry tropical habitats. The majority are corticolous species that grow on the bark of trees or shrubs. A few are saxicolous; species that grow on rocks. While many of the lichens found to date in Madagascar are relatively widespread, tropical species, some are endemic. ''Isalonactis madagascariensis'', for example, is known only from its type locality near Isalo National Park, and new species continue to be fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canoparmelia Quintarigera
''Canoparmelia'' is a genus of lichen-forming fungi in the family Parmeliaceae. The widespread genus contains about 35 species. ''Canoparmelia'', a segregate of the parmelioid lichen genus ''Pseudoparmelia'', was circumscription (taxonomy), circumscribed by John Alan Elix, John Elix and Mason Hale in 1986. Description ''Canoparmelia'' lichens have grey or rarely yellow-green thallus, thalli containing the secondary chemicals atranorin and chloroatranorin, or rarely usnic acid, in the cortex (botany), cortex. The thallus is made of more or less rotund lobes that are 3.0–5.0 mm wide and lack cilia; the medulla (lichenology), medulla is white. The underside of the thallus is black or brown with naked brown margins and simple rhizines of the same colour. ''Canoparmelia'' produces small ellipsoid ascospores that measure 10–14 by 6–8 micrometre, μm. The conidium, conidia are fusiform (spindle-shaped) or bifusiform, measuring 7–10 μm long. Species *''Canoparmelia a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opegrapha Varians
''Opegrapha'' is a genus of mostly lichen-forming fungi in the family Opegraphaceae. These lichens form crusty patches on bark, rock, or other lichens, and are easily recognized by their distinctive black, slit-like or rounded fruiting bodies that look like tiny scribbles or dashes on the surface. The genus includes more than 100 species found worldwide, with most partnering with orange-pigmented green algae, though some live as parasites on other lichens. Description ''Opegrapha'' species form a crust-like thallus that adheres tightly to bark, rock or even the surface of other lichens. This crust may be paper-thin or rather thick and is often cracked into a mosaic of small . Colours range from chalk white through shades of grey and mauve to dark brown or olive-green, and a narrow dark sometimes outlines individual colonies. Most members partner with the orange-pigmented green alga '' Trentepohlia'', but a few live parasitically on lichens that employ different algal partners ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tsimanampetsotsa National Park
Tsimanampetsotsa National Park also spelt Tsimanampetsotse, and known as Tsimanampetsotsa Nature Reserve is a 432 km2 national park on the south-west coast of Madagascar in the region Atsimo-Andrefana. The park is south of Toliara and south of the capital, Antananarivo. Route Nationales (RN) 10 to Faux Cap passes the park and the nearest airport is at Toliara. The national park contains and is named after Lake Tsimanampetsotsa. History and Significance Tsimanampetsotsa National Park encompasses the westernmost escarpment of the limestone Mahafaly Plateau. It was first protected in 1927 for its endemic flora and fauna and became a national park in 1966. It is within the Madagascar spiny forests or "spiny desert" of southern Madagascar, a globally distinctive ecoregion. This is the area with the highest level of plant endemism in Madagascar, with 48% of the genera and 95% of the species endemicElmqvist T, Pyyko ̈nen M, Tengo ̈M, Rakotondrasoa F, Rabakonandrianina E, et al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isalo National Park
Isalo National Park is a National Park in the Ihorombe Region of Madagascar, in the southwestern corner of the Province of Fianarantsoa. The closest town is Ranohira, and the closest cities are Toliara and Ihosy. It is a sandstone landscape that has been dissected by wind and water erosion into rocky outcrops, plateaus, extensive plains and up to deep canyons. There are permanent rivers and streams as well as many seasonal watercourses. Elevation varies between . History and significance Isalo National Park was created in 1962 and has been administered by the Madagascar National Parks authority since 1997. The Bara people have traditionally inhabited this area, a nomadic people subsisting on cattle (zebu) farming. There are burial sites of the Bara people and some older burial sites of the Sakalava. Isalo is primarily within the Madagascar dry deciduous forests, dry deciduous forests ecoregion, an ecoregion in which natural vegetation has been reduced by almost 40% of its origin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthoparmelia Subflabellata
''Xanthoparmelia'' (commonly known as green rock shields or rock-shield lichens) is a genus of foliose lichens in the family Parmeliaceae.Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, This genus of lichen is commonly found in the United States, South America, southern Africa, Europe, Australia, and New Zealand. The name means 'golden yellow parmelia'. The photobiont (photosynthetic partner) is ''Trebouxia'' (a genus of green algae). Taxonomy ''Xanthoparmelia'' was originally conceived of as a section of the genus '' Parmelia'' by Brazilian lichenologist Edvard August Vainio in 1890, to accommodate yellow species with narrow lobes. Mason Hale considered that the combination of traits including the presence of the cortical pigment usnic acid, and the microscopic structure of the upper cortex were sufficient criteria to segregate ''Xanthoparmelia'' from the genus ''Parmelia''. He formally transferred 93 species, including the type, ''Xanthoparm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerophyton Madagascariense
''Sclerophyton'' is a genus of lichen-forming fungi in the family Opegraphaceae. It has about 15 species. The genus was circumscribed by German lichenologist Franz Gerhard Eschweiler in 1824, with '' Sclerophyton elegans'' assigned as the type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe .... Species *'' Sclerophyton aptrootii'' *'' Sclerophyton conspicuum'' *'' Sclerophyton elegans'' *'' Sclerophyton extenuatum'' *'' Sclerophyton fluorescens'' *'' Sclerophyton hillii'' *'' Sclerophyton indicum'' *'' Sclerophyton insularum'' *'' Sclerophyton madagascariense'' *'' Sclerophyton perithecioideum'' – Brazil *'' Sclerophyton puncticulatum'' *'' Sclerophyton seriale'' *'' Sclerophyton stigmaticum'' *'' Sclerophyton syncesioides'' *'' Sclerophyton trinidadense'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roccella Montagnei
''Roccella'' is a genus of 23 species of lichens in the family Roccellaceae. The genus was circumscribed by Swiss botanist Augustin Pyramus de Candolle in 1805, with '' Roccella fuciformis'' as the type species. Description ''Roccella'' presents a fruticose (shrub-like), thallus that is either erect or (hanging) with sparse branching. The main and terminal , varying in shape from flattened to rounded (), typically measure 2 to 5 mm (up to 10 mm) in thickness and 5 to 15 cm in length. These branches has colours ranging from creamy white-greyish to greyish-brown and have surfaces that are either smooth or wrinkled, with some being sparsely (powdery) or lacking pruina (epruinose). Soredia, reproductive propagules for asexual reproduction, are present in many species within the genus. The of ''Roccella'' lichens is made of hyphae that are arranged in an manner and are about 40 to 70 μm thick. The medulla (the inner layer) is loosely structured above, havi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roccella Linearis
Roccella may refer to: * Roccella Valdemone, a municipality in Sicily, Italy * Roccella Ionica (or Roccella Jonica), a municipality in Calabria, Italy * The lichen genus ''Roccella'', known for the species ''Roccella tinctoria ''Roccella tinctoria'' is a lichenised species of fungus in the genus '' Roccella'', homotypic synonym of ''Lecanora tinctoria'' (DC.) Czerwiak., 1849. It was first described by Augustin Pyramus de Candolle in 1805. It has the following varieti ...'' among others See also * Roccellaria {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
