angustatus Domin Decaisnina brittenii is a species of flowering plant, an epiphytic hemiparasitic plant of the family Loranthaceae native to the Northern Territory, Queensland[3] and northern Western Australia.

[4] D. brittenii has linear to narrowly lanceolate leaves and this is the only way in which it differs from D.

[5] Decaisnina brittenii was first described in 1922 as Loranthus brittenii by William Blakely,[6][7] despite a specimen, NSW 79295, having been collected by Joseph Banks at Endeavour River in 1770 during Cook's first voyage,[8] and subsequently drawn for Joseph Banks by Daniel Solander.

[9][10] In 1966, Bryan Alwyn Barlow reassigned it to the genus, Decaisnina.

[1][2] The generic name, Decaisnina honours the French botanist, Joseph Decaisne (1807–1882), and the specific epithet, brittenii, honours the British botanist, James Britten (1846–1924),[11]