Tibouchina papyrus
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| Tibouchina papyrus | |
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Myrtales |
| Family: | Melastomataceae |
| Genus: | Tibouchina |
| Species: | T. papyrus |
| Binomial name | |
| Tibouchina papyrus Toledo 1952 | |
Tibouchina papyrus Toledo was described in 1952.[1] 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.[2][3] 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.[4][5] This species has been collected at elevations between 500 metres and 1,100 metres.[5][3] T. papyrus is listed as vulnerable by the IUCN.[6][5] Tibouchina papyrus is locally known as “pau-papel”.[7]
The flowers of T. papyrus are buzz pollinated by large bees in the genera Xylocopa, Bombus and Centris, and the seeds are wind dispersed (autochory).[3][8] Flowers have higher fruit production when cross-pollinated although they are not self-incompatible and can produce low numbers of fruit when self-pollinated.[8] One study of microsatellite loci showed low levels of polymorphism and low genetic diversity within populations,[7] while another study found that populations of T. papyrus are highly differentiated with little to no gene flow between populations.[5]
