Question: Which of the following is a type of cacti known to grow in Brazil: Piper or Discocactus?

<P0-S0> Platypodium elegans or the graceful platypodium is a large leguminous tree found in the Neotropics that forms part of the forest canopy. <P0-S1>  It was first described by Julius Rudolph Theodor Vogel in 1837 and is the type species of the genus. <P0-S2>  The tree has been known to grow up to 30 metres in height and have a trunk with a diameter up to 1 m at breast height. <P0-S3>  Its trunk has large holes in it, sometimes making it possible to see through the trunk. <P0-S4>  The holes provide a habitat for giant damselflies and other insects both when alive and once the tree has died and fallen over. <P0-S5>  It has compound leaves each of which is made up of 10–20 leaflets. <P0-S6>  Three new chemical compounds have been isolated from the leaves and they form part of the diet of several monkeys and the squirrel "Sciurus ingrami". <P0-S7>  In Panama it flowers from April to June, the flowers contain only four ovules, but normally only one of these reaches maturity forming a winged seed pod around 10 cm long and weighing 2 g. <P0-S8>  During the dry season around a year after the flowers are fertilised, the seeds are dispersed by the wind and the tree loses it leaves. <P0-S9>  The seeds are eaten by agoutis and by bruchid beetle larvae. <P0-S10>  The majority of seedlings are killed by damping off fungi in the first few months of growth, with seedlings that grow nearer the parent trees being more likely to die. <P0-S11>  The seedlings are relatively unable to survive in deep shade compared to other species in the same habitat. <P0-S12>  Various epiphytes are known to grow on "P. elegans" with the cactus "Epiphyllum phyllanthus" being the most abundant in Panama. <P0-S13>  Despite having holes in its trunk which should encourage debris and seeds to collect, hemiepiphytes are relatively uncommon, meaning that animals are not attracted to it to feed and then defecate. <P0-S14>  It has no known uses in traditional medicine and although it can be used for timber, the wood is of poor quality. <SEP> <P1-S0> Schlumbergera is a small genus of cacti with six species found in the coastal mountains of south-eastern Brazil. <P1-S1>  Plants grow on trees or rocks in habitats that are generally shady with high humidity, and can be quite different in appearance from their desert-dwelling cousins. <P1-S2>  Most species of "Schlumbergera" have stems which resemble leaf-like pads joined one to the other and flowers which appear from areoles at the joints and tips of the stems. <P1-S3>  Two species have cylindrical stems more similar to other cacti. <P1-S4>  In Brazil, the genus is referred to as "Flor de Maio " (May flower), reflecting the period in which they flower in the Southern Hemisphere. <SEP> <P2-S0> Piper, the pepper plants or pepper vines (a term used for certain "Clematis" in older times), are an economically and ecologically important genus in the family Piperaceae. <SEP> <P3-S0>  The name comes from the ancient Greek "diskos " (=disc) because of its shape. <P3-S1>  "Discocactus" plants are endemic to southern Brazil, eastern Bolivia, and northern Paraguay. <P3-S2>  These species are in the risk of extinction in the wild. <P3-S3> Discocactus is a genus of tropical cacti.