Parsonsia alboflavescens

Parsonsia alboflavescens is a woody vine of the family Apocynaceae, found from tropical and subtropical Asia to Northern Australia.
In the Northern Territory of Australia, where it occurs in Arnhem Land, it has been declared "near threatened".
Taxonomy.
"Parsonsia alboflavescens" was first described in 1818, by Dennstedt, as "Periploca alboflavescens". It was described many times. The current name is that given by Mabberley in 1977, who, working through the many names, found that Dennstedt's publication preceded all others, which meant that this "Parsonsia" took the species epithet, "alboflavescens".
Etymology.
Robert Brown gave the generic name,"Parsonsia", to honour James Parsons (1705–1770). The species epithet, "alboflavescens", is derived from the Latin: "albus" (white). "flavescens" (turning yellow, becoming yellow) and refers to the flower.