Brasiliopuntia is a genus of tree-like cactus in the family Cactaceae (order Caryophyllales), native to South America. The genus was established in 1926 by Alwin Berger, who elevated it from Karl Moritz Schumann's 1898 subgenus Brasiliopuntia within Opuntia. The first species was described as Cactus brasiliensis by Carl Ludwig Willdenow in 1814.
Brasiliopuntia is notable for including the tallest member of the Opuntia subfamily: Brasiliopuntia brasiliensis reaches heights of 20 meters or more, with a central cylindrical trunk supporting thin, upright, slightly shrunken cladodes. Intermediate stem segments are cylindrical and 20 to 100 centimeters long. The leaves are small, bright green, and soon deciduous. Areoles bear white hairs and later develop glochids, with one or two small brown upright spines — or sometimes none — that are thin, reddish, and up to 15 millimeters long.
Flowers appear only on mature plants, opening during the day near the tips of thin-fleshed segments or from the pericarpels of old flowers. They are light brown to yellow and up to 6 centimeters long, with hair-like staminodes between the perianth and the stamens. The fleshy fruits are spherical to pear-shaped or elongated, 3 to 4 centimeters in diameter, ranging from yellow through orange-red and red to purple, and bear conspicuous tufts of dark brown glochids. Each fruit contains one to five very large (6.5 to 10 millimeters), thick, disc-like, laterally compressed, woolly seeds.
While several species have been described historically — including B. schulzii, B. bahiensis, B. neoargentina, and B. subcarpa — most authorities now treat these as variants of the single species B. brasiliensis, though some databases continue to recognize additional taxa.
Etymology
The name Brasiliopuntia combines "Brasilia" (referring to Brazil, the genus's primary native range) with "Opuntia" (the prickly pear genus from which it was taxonomically split), reflecting both its geographic origin and its close phylogenetic relationship to Opuntia.
Distribution
Brasiliopuntia is native to South America, occurring in Brazil, Paraguay, eastern Bolivia, Peru, and northern Argentina. It has become naturalized outside its native range, notably in Florida and other subtropical regions. The genus's core distribution is in seasonally dry tropical forests and open woodlands of central and eastern South America.
Taxonomy Notes
The genus has a well-documented taxonomic history. Karl Moritz Schumann first recognized its distinctiveness in 1898, creating the subgenus Brasiliopuntia within Opuntia. Nathaniel Lord Britton and Joseph Nelson Rose considered it worthy of independent genus status in 1919. Alwin Berger formally elevated it to full genus rank in 1926. The type and most widely recognized species, B. brasiliensis, was first described as Cactus brasiliensis by Willdenow in 1814.
Taxonomic disagreement persists regarding species boundaries: Wikipedia treats Brasiliopuntia as monotypic (B. brasiliensis only), listing B. schulzii and several other names as synonyms. GBIF, however, accepts two species — B. brasiliensis and B. schulzii — reflecting a splitter view. The genus is placed in the subfamily Opuntioideae within Cactaceae. Authorship per GBIF is (K.Schum.) A.Berger, 1926.
