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''Sophora prostrata'' is commonly known as kōwhai, prostrate kōwhai or dwarf kōwhai and is 
It is a low growing shrub, reaching a height of around 2 metres. This species has a divaricating habit that lasts for the life of the shrub unlike other New Zealand ''Sophora'' species which lose the divaricating habit as adult trees.
The leaves of this species are usually quite small, up to about 2 cm in length.
Flowers are often orange though they do occur as yellow in common with most other
endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...
to the eastern South Island
The South Island ( , 'the waters of Pounamu, Greenstone') is the largest of the three major islands of New Zealand by surface area, the others being the smaller but more populous North Island and Stewart Island. It is bordered to the north by ...
from Marlborough
Marlborough or the Marlborough may refer to:
Places Australia
* Marlborough, Queensland
* Principality of Marlborough, a short-lived micronation in 1993
* Marlborough Highway, Tasmania; Malborough was an historic name for the place at the sou ...
to the Waitaki Valley in New Zealand
New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...
although most commonly found on the Banks Peninsula.
It is a low growing shrub, reaching a height of around 2 metres. This species has a divaricating habit that lasts for the life of the shrub unlike other New Zealand ''Sophora'' species which lose the divaricating habit as adult trees.
The leaves of this species are usually quite small, up to about 2 cm in length.
Flowers are often orange though they do occur as yellow in common with most other kōwhai
Kōwhai ( or ) are small woody legume trees within the genus '' Sophora'', in the family Fabaceae, that are native to New Zealand. There are eight species, with '' Sophora microphylla'' and '' Sophora tetraptera'' being large trees. Their natu ...
species. The seeds are black or very dark brown and may appear dark red. This contrasts with other native New Zealand Sophora species whose seeds are yellow.
References
prostrata Trees of New Zealand Divaricating plants {{Sophoreae-stub