Euphorbia tannensis var. finlaysonii
Encyclopedia
Euphorbia tannensis var. finlaysonii is a variety of desert herb native to Australia
.
, E. tannensis var. eremophila
, by its lobed involucral glands.
in 1935, at species rank as Euphorbia finlaysonii. In 1977 David Hassall demoted it to a variety of E. tannensis
. At the same time he did the same thing for E. eremophila, and since he felt these two to be more closely related to each other than either is to the type material of E. tannensis, he erected E. tannensis subsp. eremophila
to hold both varieties.
and the Northern Territory
.
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
.
Description
It grows as an erect shrub, usually up to a metre in height, but sometimes up to 1.5 metres, with green or yellow flowers. From a distance it may appear leafless. It is distinguished from the other variety of E. tannensis subsp. eremophilaEuphorbia tannensis subsp. eremophila
Euphorbia tannensis subsp. eremophila, commonly known as Desert Spurge, is a subspecies of herb or shrub native to Australia.-Description:...
, E. tannensis var. eremophila
Euphorbia tannensis var. eremophila
Euphorbia tannensis var. eremophila is the more widespread variety of E. tannensis subsp. eremophila .-Description:...
, by its lobed involucral glands.
Taxonomy
This taxon was first published by John McConnell BlackJohn McConnell Black
John McConnell Black was a Scottish botanist who emigrated to Australia in 1877 and eventually documented and illustrated thousands of flora in South Australia in the early 20th century. His publications assisted many botanists and scientists in the decades that followed...
in 1935, at species rank as Euphorbia finlaysonii. In 1977 David Hassall demoted it to a variety of E. tannensis
Euphorbia tannensis
Euphorbia tannensis is a species of herb or shrub native to Australia and some Pacific islands.-Description:It grows as an erect annual or perennial herb or shrub, from 10 centimetres to a metre in height, with green or yellow flowers...
. At the same time he did the same thing for E. eremophila, and since he felt these two to be more closely related to each other than either is to the type material of E. tannensis, he erected E. tannensis subsp. eremophila
Euphorbia tannensis subsp. eremophila
Euphorbia tannensis subsp. eremophila, commonly known as Desert Spurge, is a subspecies of herb or shrub native to Australia.-Description:...
to hold both varieties.
Distribution and habitat
This variety has a much more restricted distribution than the other infraspecific taxa of E. tannensis; it occurs only in a narrow strip of desert in South AustraliaSouth Australia
South Australia is a state of Australia in the southern central part of the country. It covers some of the most arid parts of the continent; with a total land area of , it is the fourth largest of Australia's six states and two territories.South Australia shares borders with all of the mainland...
and the Northern Territory
Northern Territory
The Northern Territory is a federal territory of Australia, occupying much of the centre of the mainland continent, as well as the central northern regions...
.