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''Magnolia sharpii'' is a tree species of '' Magnolia'' from
Chiapas Chiapas (; Tzotzil language, Tzotzil and Tzeltal language, Tzeltal: ''Chyapas'' ), officially the Free and Sovereign State of Chiapas ( es, Estado Libre y Soberano de Chiapas), is one of the states that make up the Political divisions of Mexico, ...
, Mexico. It grows in wet tropical habitats.


Description

''Magnolia sharpii'' is a large tree, growing up to 25 meters tall with a trunk more than 50 cm in diameter.


Range and habitat

''Magnolia sharpii'' is endemic to the Central Highlands of Chiapas, where it is known from scattered localities between 1,950 and 2,940 meters elevation. The species' estimated extent of occurrence (EOO) is 2,228 km2. Its typical habitat is on steep slopes or in ravines in
cloud forests A cloud forest, also called a water forest, primas forest, or tropical montane cloud forest (TMCF), is a generally tropical or subtropical, evergreen, montane, moist forest characterized by a persistent, frequent or seasonal low-level clo ...
and humid oak and pine–oak forests. It favors mature closed-canopy forests dominated by oaks which sustain a cool and moist forest floor environment. It is shade-tolerant but intolerant of prolonged drought.


Conservation and threats

The species has a small, scattered population, and is threatened by severe deforestation across much of its range. It favors undisturbed forests which are becoming rarer across its range. Its conservation status is assessed as endangered.


Prehistory

Fossil records indicate that the species was widely distributed in North America during the Miocene, with widespread fossils from Canada, the United States, Mexico, and Central America. Over 25 million years its range contracted, and the species is now limited to a disjunct distribution across a small area of Mexico.


Name

The specific epithet of ''sharpii'', refers to
Aaron John Sharp Aaron John Sharp (July 29, 1904 – November 16, 1997), known professionally as Jack Sharp, was an American botanist and bryologist, considered an expert on mosses. Early life Sharp was raised on a dairy farm near East Liberty, Ohio. He atten ...
(1904–1997), known professionally as ''Jack Sharp'', who was an American
botanist Botany, also called , plant biology or phytology, is the science of plant life and a branch of biology. A botanist, plant scientist or phytologist is a scientist who specialises in this field. The term "botany" comes from the Ancient Greek wo ...
and bryologist, considered an expert on
moss Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta (, ) '' sensu stricto''. Bryophyta (''sensu lato'', Schimp. 1879) may also refer to the parent group bryophytes, which comprise liverworts, mosses, and hor ...
es.


References


External links

* * {{Taxonbar, from=Q15494811 sharpii Flora of Chiapas Cloud forest flora of Mexico Flora of the Chiapas Highlands Chiapas montane forests Endemic flora of Mexico