''Oncidium bifolium'' is a species of

orchid Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering ...

ranging from

Brazil Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area ...

to northern

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, t ...

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bifolium A bifolium is a quartic plane curve with equation in Cartesian coordinates: :(x^2 + y^2)^2 = ax^2y. Construction and equations Given a circle C through a point O, and line L tangent to the circle at point O: for each point Q on C, define ...

Orchids of Argentina Orchids of Brazil {{Cymbidieae-stub