EUCLIDAuthors: MIH Brooker, AV Slee, JR Connors, SM Duffy
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What is EUCLID?

Centre for Plant Biodiversity Research

EUCLID is an interactive identification and information system for eucalypts, using Lucid software.

It was produced by the Centre for Plant Biodiversity Research from the Australian National Herbarium database of over 60,000 eucalypt specimens as well as information derived from glasshouse studies for details of comparative juvenile morphology, and from widespread field observations. It was first published in 1997, with a revised edition published in 2000 which includes all the species of Angophora. EUCLID Second Edition published in 2002, covers all southern Australian eucalypts.

Eucalypts have been difficult to identify in the past but now with EUCLID and a minimum of plant material and/or instructive illustrations, the task has been made simple.


More about EUCLID


EUCLID (EUCaLyptus IDentification) allows the user to quickly and easily identify any of the 690 species and subspecies of Eucalyptus and Angophora native to southern Australia, i.e. New South Wales, Australian Capital Territory, Victoria, Tasmania, South Australia, and the southern part of Western Australia below the 26th parallel.

Region of Australia covered by EUCLID Second Edition

Region of Australia covered by EUCLID Second Edition



Identifications are achieved by matching features of the specimen with features from any of the 113 different characters available in the key. The characters are arranged into sets and these sets contain information about the natural distribution, habit, bark, flower buds, fruits, seeds, juvenile leaves, and habitat. Characters can be selected in any order. The great advantage over traditional identification keys is that EUCLID gives the freedom to avoid characters that are unavailable or difficult to assess.

To enhance the word descriptions, each character is illustrated by line drawings, colour pictures or scanning electron micrographs. Most species are also illustrated by a range of colour photos of the habit, bark, leaf venation, buds, flowers, fruits, seeds, juvenile, seedlings, and a map of the natural geographic distribution. These images with the description are presented in the format of a fact sheet.

Character state image: Leaf intramarginal vein - absent    Eucalyptus arborella (Twertup mallet)    Eucalyptus melliodora (Yellow box)    Eucalyptus vesiculosa (Corackerup marlock)

The database includes extra information on nomenclature and synonymies, a description of each species, notes on related or similar species and how they may be distinguished. Uses for the species such as timber, fibre, honey production, shelter and ornamentation are also included.


EUCLID is designed for use by anyone who wants to identify eucalypts. Professionals, researchers, botanists, foresters, nurserymen, students, educators, land managers, farmers, horticulturalists and gardeners will all find this an essential tool for identifying eucalypts.


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Centre for Plant Biodiversity Research CSIRO Bushcare Lucid