Rhamphogyne is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of flowering plant

Flowering plant

The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

s in the daisy family, Asteraceae. It belongs to the tribe

Tribe (biology)

In biology, a tribe is a taxonomic rank between family and genus. It is sometimes subdivided into subtribes.Some examples include the tribes: Canini, Acalypheae, Hominini, Bombini, and Antidesmeae.-See also:* Biological classification* Rank...

 of typical daisies (Astereae

Astereae

Astereae is a tribe of plants in the family Asteraceae that includes annuals, biennials, perennials, subshrubs, shrubs and trees. Plants within the tribe are present nearly worldwide divided into 170 genera and more than 2,800 species...

), and therein is placed in the subtribe Lagenophorinae by those that recognize it. This genus resembles plants from the related ragwort

Ragwort

Ragwort is a very common wild flower in the family Asteraceae that is native to northern Eurasia, usually in dry, open places, and has also been widely distributed as a weed elsewhere....

 tribe (Senecioneae

Senecioneae

Senecioneae is the largest tribe of the Asteraceae, or the sunflower family, comprising approximately 150 genera and 3,000 species. Almost one-third of the species in this tribe are placed in the genus Senecio...

) in some respects.

The type species

Type species

In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...

, Rhamphogyne rhynchocarpa, was thus initially placed in Abrotanella

Abrotanella

Abrotanella is a genus in the family Asteraceae, of about 20 species, native to New Guinea, Australia, New Zealand and temperate South America....

. Presently the genus is monotypic

Monotypic

In biology, a monotypic taxon is a taxonomic group with only one biological type. The term's usage differs slightly between botany and zoology. The term monotypic has a separate use in conservation biology, monotypic habitat, regarding species habitat conversion eliminating biodiversity and...

and restricted to Rodrigues

Rodrigues

Rodrigues is a common surname in the Portuguese language. It was originally a Patronymic, meaning Son of Rodrigo or Son of Rui. The "es" signifies "son of". The name Rodrigo is the Portuguese form of Roderick, meaning "famous power" or "famous ruler", from the Germanic elements "hrod" and "ric" ,...

 in the Mascarene Islands

Mascarene Islands

The Mascarene Islands is a group of islands in the Indian Ocean east of Madagascar comprising Mauritius, Réunion, Rodrigues, Cargados Carajos shoals, plus the former islands of the Saya de Malha, Nazareth and Soudan banks...

. Lagenocypsela papuana of New Guinea

New Guinea

New Guinea is the world's second largest island, after Greenland, covering a land area of 786,000 km2. Located in the southwest Pacific Ocean, it lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago...

 was formerly placed here; though the relationships of Rhamphogyne remain obscure, it is more likely to be related to Apodocephala

Apodocephala

Apodocephala is a genus of flowering plants in the daisy family....

or some other Mascarene lineage .