''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.
This species has been collected at elevations between 500 metres and 1,100 metres.
''T. papyrus'' is listed as
vulnerable by the IUCN.
''Tibouchina'' ''papyrus'' is locally known as “pau-papel”.
The flowers of ''T. papyrus'' are
buzz pollinated by large bees in the genera ''
Xylocopa
Carpenter bees are species in the genus ''Xylocopa'' of the subfamily Xylocopinae. The genus includes some 500 bees in 31 subgenera. The common name "carpenter bee" derives from their nesting behavior; nearly all species burrow into hard plant ma ...
'', ''
Bombus
A bumblebee (or bumble bee, bumble-bee, or humble-bee) is any of over 250 species in the genus ''Bombus'', part of Apidae, one of the bee families. This genus is the only extant group in the tribe Bombini, though a few extinct related gener ...
'' and ''
Centris'', and the seeds are wind dispersed (
autochory
In Spermatophyte plants, seed dispersal is the movement, spread or transport of seeds away from the parent plant.
Plants have limited mobility and rely upon a variety of dispersal vectors to transport their seeds, including both abiotic vectors, ...
).
Flowers have higher fruit production when
cross-pollinated although they are not
self-incompatible and can produce low numbers of fruit when self-pollinated.
One study of microsatellite loci showed low levels of polymorphism and low genetic diversity within populations,
while another study found that populations of ''T. papyrus'' are highly differentiated with little to no
gene flow
In population genetics, gene flow (also known as gene migration or geneflow and allele flow) is the transfer of genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent a ...
between populations.
References
External links
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{{Taxonbar, from=Q10382389
papyrus