Eucalyptus youngiana, commonly known as Large-fruited Mallee, Ooldea Mallee and Yarldarlba, is a tree that occurs in arid and semi-arid areas of southern Western Australia

Western Australia

Western Australia is a state of Australia, occupying the entire western third of the Australian continent. It is bounded by the Indian Ocean to the north and west, the Great Australian Bight and Indian Ocean to the south, the Northern Territory to the north-east and South Australia to the south-east...

 and South Australia

South 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...

.

Description

E. youngiana grows as a mallee

Mallee (habit)

Mallee is the growth habit of certain eucalypt species that grow with multiple stems springing from an underground lignotuber, usually to a height of no more than ten metres...

 from four to ten metres high, with rough, flaky bark and red or yellow flowers from June to October.

Taxonomy

The species was first published in 1876 by Ferdinand von Mueller

Ferdinand von Mueller

Baron Sir Ferdinand Jacob Heinrich von Mueller, KCMG was a German-Australian physician, geographer, and most notably, a botanist.-Early life:...

, based on specimens collected at Queen Victoria Spring by Jess Young

Jess Young

Jess Young was an explorer who accompanied Ernest Giles during his fourth expedition, making some important botanical collections along the way.Little is known of his early life; it is not even certain whether "Jess" was a full given name or an abbreviation...

 during the Giles expedition of May 1875. The specific name honours Young.

There are no subspecies or varieties. In 1969 Clifford Boomsma demoted it to a subspecies of E. pyriformis

Eucalyptus pyriformis

Eucalyptus pyriformis, Pear-fruited mallee, Dowerin Rose, is a small, straggly mallee with smooth, grey or salmon-pink bark often sheeding in ribbons at the base. Juvenile leaves are stalked, alternate, ovate , to 9 x 5 cm. Adult leaves are stalked, broad-lanceolate to 9.5 x 3.2 cm,...

, but this was overturned by Ian Brooker

Ian Brooker

Murray Ian Hill Brooker AM , better known as Ian Brooker, is an Australian botanist. He is widely recognised as the leading authority on the genus Eucalyptus....

in 2000.

Distribution and habitat

It has a fairly wide distribution, occurring throughout arid and semi-arid areas of Western Australia and South Australia. The relief is generally gentle slopes. It grows in red sands and sandy loams.