''Romulea flava'', also known by its common name Greenbract froetang, is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of flowering plant from the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

Romulea ''Romulea'' is a genus of flowering plants in the family Iridaceae, first described as a genus in 1772. It is distributed in Europe, the Mediterranean, the Arabian Peninsula, and Africa.Cape Provinces The Cape Provinces of South Africa is a biogeographical area used in the World Geographical Scheme for Recording Plant Distributions (WGSRPD). It is part of the WGSRPD region 27 Southern Africa. The area has the code "CPP". It includes the Sou ...

and has been introduced into Australian states of

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...

and

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to ...

. It grows to a height of 10 to 15cm and has flowers that are white or yellow on the outside with an inner yellow cup. The flowers only open on days that are warn and sunny and unually only in the afternoon. It has four accepted Infraspecifics : * ''Romulea flava var. flava'' * ''Romulea flava var. minor'' (Bég.) M.P.de Vos * ''Romulea flava var. hirsuta'' (Bég.) M.P.de Vos * ''Romulea flava var. viridiflora'' (Bég.) M.P.de Vos

References

flava {{Iridaceae-stub