Euphorbia tannensis var. eremophila
Encyclopedia
Euphorbia tannensis var. eremophila is the more widespread variety of 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:...

 (Desert Spurge).

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, E. tannensis var. finlaysonii
Euphorbia tannensis var. finlaysonii
Euphorbia tannensis var. finlaysonii is a variety of desert herb native to Australia.-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...

, by its ovate involucral glands.

Taxonomy

This taxon was first published by Allan Cunningham
Allan Cunningham (botanist)
Allan Cunningham was an English botanist and explorer, primarily known for his travels in New South Wales to collect plants.- Early life :...

 in 1848, at species rank as Euphorbia eremophila. 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. finlaysonii, 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.

Distribution and habitat

This variety is widespread on the Australian mainland, occurring in every mainland state, though only in the far north-west corner of Victoria
Victoria (Australia)
Victoria is the second most populous state in Australia. Geographically the smallest mainland state, Victoria is bordered by New South Wales, South Australia, and Tasmania on Boundary Islet to the north, west and south respectively....

.
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