''Praecereus euchlorus'' is a flowering plant in the family

Cactaceae A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, ...

that is found in Brazil, Bolivia and Paraguay at elevations of 700 to 1300 meters

Description

''Praecereus euchlorus'' initially grows slightly upright, is less branched and later bent over and leaning in sympathy. The slender shoots are up to 5 meters long. There are 4 to 14 low and sharp-edged ribs. The up to 20 thorns are weak, whitish, needlelike and often very unevenly long. The up to 4 middle spines, which may be missing, are up to 5 (rarely to 7.5) inches long. The much shorter edge spines have a length of 5 to 10 (rarely to 15) millimeters. The white to greenish white flowers are up to 8 centimeters long. Their pericarpell and the flower tube are covered with very little scales and otherwise bald. The fruits are elongated.

Subspecies

Accepted Subspecies: * ''Praecereus euchlorus'' subsp. ''amazonicus'' * ''Praecereus euchlorus'' subsp. ''diffusus'' * ''Praecereus euchlorus'' subsp. ''euchlorus'' * ''Praecereus euchlorus'' subsp. ''goianus'' * ''Praecereus euchlorus'' subsp. ''jaenensis'' * ''Praecereus euchlorus'' subsp. ''smithianus''

Distribution

''Praecereus euchlorus'' is found slopes on rocky outcrops in southern and western

Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...

Paraguay Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Boli ...

Trinidad Trinidad is the larger, more populous island of the Republic of Trinidad and Tobago, the country. The island lies off the northeastern coast of Venezuela and sits on the continental shelf of South America. It is the southernmost island in ...

Venezuela Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...

Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with Insular region of Colombia, insular regions in North America. The Colombian mainland is bordered by the Caribbean Sea to the north, Venezuel ...

Ecuador Ecuador, officially the Republic of Ecuador, is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. It also includes the Galápagos Province which contain ...

Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...

Bolivia Bolivia, officially the Plurinational State of Bolivia, is a landlocked country located in central South America. The country features diverse geography, including vast Amazonian plains, tropical lowlands, mountains, the Gran Chaco Province, w ...

, and northeast

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

growing from sea level to 2000 meters.

Taxonomy

Originally described as ''Cereus euchlorus'' by

Karl Moritz Schumann Karl Moritz Schumann (17 June 1851 – 22 March 1904) was a German botanist. Schumann was born in Görlitz. He was curator of the Berlin-Dahlem Botanical Garden and Botanical Museum, Botanisches Museum in Berlin-Dahlem from 1880 until 1894. ...

in 1897, its specific epithet derives from the Greek words "eu" (real) and "chloros" (green), referring to the plant's vibrant green shoots. In 1997,

Nigel Paul Taylor Nigel Paul Taylor (born 1956) is a British botanist. He mainly focuses on the study of cacti. Taylor has been director of the Singapore Botanic Gardens since September 2011. He was previously curator of the Kew Gardens in London London is ...

reclassified the species into the genus ''Praecereus''.N. P. Taylor: ''Nomenclatural adjustments in Copiapoa, Echinocerus, Escobaria and Praecereus.'' In: ''Cactaceae Consensus Initiatives.'' Nummer 3, 1997, S. 10.

References

External links

* * {{Taxonbar, from=Q2107350 euchlorus Flora of Bolivia Flora of Paraguay