Question: What genuses does Pleioblastus and Tibouchina belong to?

Context paragraphs:
Tibouchina heteromalla: Tibouchina heteromalla, known by the common name silverleafed princess flower in English is a species of evergreen flowering plant in the genus "Tibouchina" of the family Melastomataceae.  It is native to Brazil.

Tibouchina oroensis: Tibouchina oroensis is a species of plant in the Melastomataceae family.  It is endemic to Ecuador.

Tibouchina anderssonii: Tibouchina anderssonii is a species of plant in the Melastomataceae family.  It is endemic to Ecuador.

Pleioblastus: Pleioblastus is a, East Asian genus of monopodial bamboos in the grass family.  They are native to China and Japan, and naturalized in scattered places in Korea, Europe, New Zealand, and the Western Hemisphere.

Tibouchina pulchra: Tibouchina pulchra is a plant species in the genus "Tibouchina".

Tibouchina papyrus: Tibouchina papyrus Toledo was described in 1952.  "Tibouchina papyrus" is a narrow endemic to the "campos rupestres" and is mainly found in three localities in the states of Goiás and Tocantins in central Brazil, including the Serra da Natividade.  Abreu "et al".  found that "T. papyrus" is a habitat-specialist on rocky outcrop "cerrado" which typically has shallow substrate and uneven topography, with sandstone soils and quartzite outcrops

Tibouchina urvilleana: Tibouchina urvilleana is a species of flowering plant in the family Melastomataceae, native to Brazil.  Growing to 3 - tall by 2 - wide, it is a sprawling evergreen shrub with longitudinally veined, dark green hairy leaves.  Clusters of brilliant purple flowers up to 10 cm in diameter, with black stamens, are borne throughout summer and autumn.

Tibouchina: Tibouchina Aubl.  is a Neotropical flowering plant genus in Melastomataceae Juss.  that contains approximately 240 species.  Species of this genus are herbs, shrubs or trees and typically have purple flowers.  They are native to Mexico, the Caribbean, and South America where they are found as far south as northern Argentina.  Members of this genus are known as glory bushes, glory trees or princess flowers.  The name "Tibouchina" is adapted from a Guianan indigenous name for a member of this genus .  A recent systematic study has shown that this genus is paraphyletic.

Tibouchina campii: Tibouchina campii is a species of plant in the Melastomataceae family.  It is found in Ecuador and possibly Peru.

Tibouchina gleasoniana: Tibouchina gleasoniana is a species of plant in the Melastomataceae family.  It is endemic to Ecuador.

Supporting paragraphs: Pleioblastus Tibouchina
Answer: Melastomataceae Juss