Calostephane [SEP] parent taxon
Calostephane
Calostephane is a genus of flowering plants in the aster family, Asteraceae.
It is distributed in tropical southern Africa and Madagascar.
These are annual herbs. The alternately arranged, toothed leaves are decurrent, the bases wrapping the stem to form wings. The flower heads are solitary or borne in loose panicle inflorescences. The heads contain yellow disc florets, and some species have yellow ray florets. The fruit has a pappus with an outer row of wide, membranous scales and an inner row of longer, narrower
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