''Magnolia ptaritepuiana'' is a species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

in the family

Magnoliaceae The Magnoliaceae () are a flowering plant family, the magnolia family, in the order Magnoliales. It consists of two genera: ''Magnolia'' and ''Liriodendron'' (tulip trees). Unlike most angiosperms, whose flower parts are in whorls (rings), the ...

. It is endemic to the

tepui A tepui , or tepuy (), is a table-top mountain or mesa found in South America, especially in Venezuela and western Guyana. The word tepui means "house of the gods" in the native tongue of the Pemon, the indigenous people who inhabit the Gran S ...

s, flat-topped mountains in southern Venezuela and southwestern

Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the ...

Description

''Magnolia ptaritepuiana'' is a tree which grows up to 20 meters tall.

Range and habitat

''Magnolia ptaritepuiana'' is known from five locations, including on the Ptari-tepui, Mount Roraima, and Sierra de Maigualida in southern Venezuela, and in the adjacent

Cuyuni-Mazaruni Cuyuni-Mazaruni (Region 7) is a region of Guyana. Venezuela claims the territory as part of Guayana Esequiba. It borders the regions of Barima-Waini, Essequibo Islands-West Demerara and Pomeroon-Supenaam to the north, the region of Upper Demera ...

region of Guyana. The species' estimated

area of occupancy Area is the quantity that expresses the extent of a region on the plane or on a curved surface. The area of a plane region or ''plane area'' refers to the area of a shape or planar lamina, while '' surface area'' refers to the area of an open s ...

(AOO) is 16 km² and its estimated

extent of occurrence Extent may refer to: Computing * Extent (file systems), a contiguous region of computer storage medium reserved for a file * Extent File System, a discontinued file system implementation named after the contiguous region * Extent, a chunk of st ...

(EOO) is 28,853.27 km². It grows in dense montane tepui forests on sandstone soils, together with species of ''

Vismia ''Vismia'' is a genus of flowering plants in the family Hypericaceae. Members of the genus are small trees and shrubs found in tropical and subtropical areas of Central America and South America. Including the countries of Belize, Bolivia, Brazil ...

'' and ''

Euterpe Euterpe (; el, Εὐτέρπη, lit=rejoicing well' or 'delight , from grc, εὖ, eû, well + el, τέρπειν, térpein, to please) was one of the Muses in Greek mythology, presiding over music. In late Classical times, she was named muse ...

'', between 1,600 and 2,300 meters elevation.

Conservation

The species' conservation status is assessed as

endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...

. It has a limited range, and is threatened with habitat loss and degradation from mining and poorly controlled tourism. Accelerating

climate change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to E ...

could disrupt the montane climate of its native region and further endanger the species.

References

{{Taxonbar, from= Q15493942 ptaritepuiana Flora of the Tepuis Flora of Guyana Flora of Venezuela