Baursia
Encyclopedia
Baursia is a section
Section (botany)
In botany, a section is a taxonomic rank below the genus, but above the species. The subgenus, if present, is higher than the section, and the rank of series, if present, is below the section. Sections are typically used to help organise very large genera, which may have hundreds of species...

 within the genus Philodendron
Philodendron
Philodendron is a large genus of flowering plants in the Araceae family, consisting of close to 900 or more species according to TROPICOS . Other sources quote different numbers of species. According to S.J. Mayo there are about 350-400 formally recognized species whereas according to Croat there...

that consists of 33 different species of plants. Philodendron species that are members of this section are typically described as having very prominent lateral veins. They also have elongated oblong leaves with a few species that are exceptions to this rule. Members of this section are usually found within southeastern South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

 and the upper amazon basin
Amazon Basin
The Amazon Basin is the part of South America drained by the Amazon River and its tributaries that drains an area of about , or roughly 40 percent of South America. The basin is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, and Venezuela...

. The type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...

 for this section is Philodendron crassinervium
Philodendron crassinervium
Philodendron crassinervium is a species of plant in the Araceae family.It is native to southeast Brazil and is part of the section Baursia. In fact, it is the type species of this section. It has long lance-shaped leaves that point upwards with a large predominant midvein. The midvein is used to...

. Additionally, philodendron within this section have plurilocular ovaries.

Philodendron in the section Baursia are often confused with those of the section Philopsammos since they both are characterized by having long elliptical leaves. The two can be distinguished however because philopsammos philodendron have bilocular ovaries.
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