Lasianthus [SEP] parent taxon
was erected by Carl Ludwig Blume in 1823. It was synonymized under "Lasianthus" in 1992. DNA sequence analysis has not resolved the question of whether "Litosanthes" is nested within "Lasianthus" or separate from it.
Affinities.
"Lasianthus", "Saldinia", and "Trichostachys" form the tribe Lasiantheae in the subfamily Rubioideae. "Perama" is related to this group and might be included within it. Lasiantheae was formerly thought to be close to "Psychotria", but is now known to
Taxon in disguise
In bacteriology, a taxon in disguise is a species, genus or higher unit of biological classification whose evolutionary history reveals has evolved from another unit of similar or lower rank, making the parent unit paraphyletic. This happens when rapid evolution makes a new species appear radically different from the ancestral group, so that it is not (initially) recognised as belonging to the parent phylogenetic group, leaving the latter an evolutionary grade.
While the term is from bacteriology, parallel examples are found throughout the tree of