Although only a dozen plant families are unique to , there are 530 unique genera and many unique species within these genera. As the n fragment of prehistoric Gondwanaland drifted north, its ancient flora became the basis for the present plant systems. Increasing aridity modified this vegetation, giving much of it hardened, pointed leaves of reduced size--a condition called scleromorphy.
's native vegetation is divisible into seven types. The first type of vegetation consists of remnants of Gondwanan rain forests, with primitive flowering plants, palms, and laurels. These occur where high rainfall and high temperatures coincide with fertile, often volcanic soils, mainly in coastal north ...

Want to read the rest of this paper?
Join Essayworld today to view this entire essay
and over 50,000 other term papers

form a mosaic in one locality and intermingle with other plant associations. Eucalyptus trees are classified according to their bark types--hence the names stringybark, ironbark, bloodwood, and smoothbark (the gums that shed their outer bark annually). The most widespread is the river red gum. Mallee eucalypts survive in semiarid regions by growing multiple stems (lignotubers) from a common rootstock. The world's tallest flowering plant is a southern eucalyptus, the mountain ash. Its height can exceed 325 feet (100 meters). Building timbers are obtained in Victoria from alpine ash and mountain ash, in New South Wales and Queensland from blackbutt, spotted gum, bluegum, and ironbark, and in Western from jarrah and karri, another type of eucalypt.
A third type of plant community is dominated by wattles (the genus Acacia of the Mimosa family) and advances beyond the last eucalyptus trees into the desert. Although more than 900 species are known, vast regions are dominated by just a ...

Get instant access to over 50,000 essays.
Write better papers. Get better grades.

Already a member? Login

are of local importance. Finally, grasslands occur where rainfall is insufficient for larger plants. Summer-growing species tend to be more northerly and winter-growing species more southerly. Hummock grasslands (including spinifex) spread across the dunes, sandy plains, and rocky ranges of the Western Plateau.
Minor coastal plant communities include salt marsh, seagrass, and mangroves. Alpine herb fields, often flattened by the wind, are dotted with sphagnum moss bogs. Weeds introduced from outside , such as wild turnip and hoary cress, compete with crops. Lantana, blackberries, bracken fern, and Paterson's curse overrun pastures. Cape tulip and Saint-John's-wort can poison ...

Succeed in your coursework without stepping into a library.
Get access to a growing library of notes, book reports,
and research papers in 2 minutes or less.


Australia. (2006, March 17). Retrieved December 14, 2018, from
"Australia.", 17 Mar. 2006. Web. 14 Dec. 2018. <>
"Australia." March 17, 2006. Accessed December 14, 2018.
"Australia." March 17, 2006. Accessed December 14, 2018.
Join today and get instant access to this and 50,000+ other essays

Added: 3/17/2006 07:25:44 AM
Category: Biographies
Type: Premium Paper
Words: 4707
Pages: 18

Save | Report


Save and find your favorite essays easier

Child Sex Tourism Bill In Austr...
Australia Joining World War 1
Role Of Government In Mixed Eco...
Australia Day
Independence Of Judiciary In Au...
Film Marketing In Australia
Australia In The Vietnam War
Convicts And Australia
Copyright | Cancel | Contact Us

Copyright © 2018 Essayworld. All rights reserved