Guide to identification with Lucid

Once in the Lucid Player you will see a menu bar, a tool bar, and a main window, which is split into four smaller windows - Characters Available, Character States Chosen (empty at start), Taxa Remaining and Taxa Discarded (empty at start). Hover over the menu and tool bar buttons for more information.

Bingo - Finds the character states that will, if chosen, result in only one taxon remaining Previous best - goes to the last most useful character Best - Gives you the most useful character Next Best - Goes to the next most useful character Prune Redundants - removes characters that are no longer useful as all remaining taxa have the same character state selected Close all characters - closes all characters so character states are no longer visible Open all characters - opens all characters to display the character states Character Sets - Opens a list of the character sets available Taxon Sets - Opens a list of the taxon sets available Restart - resets the key for a new identification Help menu Key menu Characters menu Taxa menu Windows menu Similarities and Differences - gives a list of the similarities and differences between the remaining taxa Characters Available window Taxa Discarded window Get Score - shows how a selected character is scored for the selected taxon Click to visit the Lucid Homepage Lucidcentral.com Arrange Windows - allows you to change the layout of the windows on the screen Learn about eucalypts - opens the Learn about eucalypts page with details on evolution, identification, hybrids, history, as well as important characters in the eucalypts Search - allows you to search for a word or phrase in the key Print - print a list of the information in any of the windows Stop - Select this button to stop downloading files Home - Opens the home page or front screen of the key Why Discarded? - shows you the character states selected which caused the selected taxon to be discarded Most Similar Taxa - gives a list of the taxa in order of their similarity to the selected taxon Similarities and Differences - gives a list of the similarities and differences between the remaining taxa Characters States Chosen window Taxa Remaining window

You are able to alter the look of your Lucid Player windows by changing the font style, size and colour or by changing the window background colour, these options are found under the Lucid Windows menu (see above).

In the Characters Available window, start with any character that matches your unidentified specimen, pick which state or states best describes the character, you can view images and notes to help with your selection.

Choosing character states: To select a character state click on the character name to open the character state list and either double-click the state you want to choose in the list or click and drag the state into the Characters States Chosen window. If you need more information to decide, then to view character notes and images click the Character State information button orange information button next to the character state name.
Alternatively you can choose your states in the character graphics window by clicking on the Character button purple information button next to the character name; select which state you want by double-clicking the image, if you need more information, drag the image over the Notes icon book icon for notes and larger images. This window will automatically go onto the next character, if this is not the character you want either click the Previous and Next arrows previous or next arrow button to get the character you want or close the window and go back to the list.

Numeric dialog boxNumeric character states: To answer a numeric character such as leaf blade width, double-click on it or drag it into the Character States Chosen window and a small dialog box will appear. Enter a value into the box between the given ranges indicated. You can either enter a single value (5), a range (5-7), a greater or less than value (>5), or a greater or less than or equal to value (<=5).

Deleting character states: If you need to delete a chosen character state, either drag it back into the Characters Available window or double-click on the state in the Character States Chosen window.

As character states are selected your list of taxa will reduce, continue selecting the next appropriate character available to you to narrow down your taxa list. If you are unsure of which character to select next, the Best option will suggest the best route to take. Alternatively, depending on the material you have available, you can select a different Character set to limit the character list to those relevant to your specimen. Lucid has a number of other features to aid your identification process, some of which are listed in detail below.

Character sets button  Character sets: You can use character sets to restrict your character list so that only the characters you are interested in at any stage of identification are displayed. If you only have a specimen of a tree branch with some fruit and leaves on it, click on the Character set icon, and tick Fruit and Leaves, this will reduce the number of characters for you to choose from.

Taxa sets button  Taxa sets: You can use taxa sets to restrict the list of Taxa Remaining so that only those taxa of interest to you are displayed. For instance, with EUCLID if you know that your specimen is an Angophora, you could choose the set “Angophora” and only the Angophoras will remain in the key. The default set is “All” which will display the taxa remaining from all three genera Angophora, Corymbia and Eucalyptus.
Choose a taxon set by selecting Sets from the Taxa menu, or click on the green Sets button. Available sets will be listed in a dialog box. Click on the sets in the list to select or deselect them.
Note that after restricting the taxa to a particular set, you may wish to use Prune Redundants to remove any characters that are inapplicable to the chosen set.

 Best button  Best: The "best" tool can help you in selecting which character to use next to reach your identification. By clicking the Best button, you are asking the player to provide you with the "best" or most useful character to use next, considering the taxa remaining. Using the "best" feature is particularly useful when you have only a few taxa remaining.
You can use the "best" characters in two ways, either Sort by Best  which sorts the character list from most useful to least useful, or Find Best  which will select and open the "best" available character. You can also sort through these via the previous and next arrows to find which one you can answer.

Bingo button  Bingo: Unlike Best which sorts the characters, Bingo identifies the character state applies to only one of the taxa remaining, choosing such a state would reduce your list to a single taxon. Select the Bingo button and the Player will scan the characters available and any "bingo" states will appear in a dialog, then select which state if any that applies to your specimen.

Similarities/Differences button Similarities/Differences: Once you get to a few taxa remaining and can't think of any more characters to use, you can access the supplementary information of notes and images to select your taxa or you can view a list of character states that differ between your taxa by selecting the Similarities/Differences button to reduce the taxon list.

Why Discarded? button Why Discarded?: By clicking this button you can find out why any taxon has been discarded, which can be useful if you were unsure of the character state you selected.

Get Score button Get Score: To query or check the scoring of a character, highlight the character and taxa you want to check then click the Get score button or keyboard shortcut Alt+T then G.

Once your specimen has been keyed out or you have only a few taxa remaining, view the supplementary information of notes and images to confirm your identification. Hopefully your specimen will be in the final taxa list. If not, go back to your characters selected and review, you may have selected a wrong character state or interpreted the character incorrectly.

Taxa information windowTaxa supplementary information: To view the supplementary information associated with each taxon, click on theTaxa information buttongreen information button to reveal a small window that gives you access to descriptions, notes, images, distribution map and netsearch. Once in the Notes window you are also able to view the images within the factsheet or by clicking the "Media" button and scroll through the images.

Slide show: You may wish to see a slide show of the images associated with the taxa to find a match for your specimen. This is available under the Taxa menu - Slide Show; you have the option to show the selected taxon or all remaining taxa. You can adjust the timing within the slide show window as to how long each image is on screen and it also has pause, skip, play and stop buttons.

If you want to learn more about eucalypts and the identification process go to:

  • the About eucalypts essay, including habit, bark, buds, flowers, fruit, seed;
  • the Sample Identification online for step-by-step instructions on how to key out a specimen with Lucid, or
  • the Lucid Help for more detailed notes on Lucid (Help on menu bar).

Some tips to remember when using Lucid

  • Become familiar with the specimen you wish to identify;
  • Note any features you think may be relevant;
  • Choose an appropriate character set;
  • Browse the characters list and answer any easy character first, this is an advantage of an interactive key opposed to a dichotomous key;
  • When selecting states, always choose more than one if you are uncertain, this will retain the taxa that are coded for either state and not those coded for both;
  • If you are using a measurement character, where possible take an average measurement rather than the largest or smallest;
  • When you've addressed all the obvious characters ask the player to suggest the best remaining character;
  • If you have no taxa left, review what you have chosen and delete any character states that you are dubious about;
  • Don't assume you will end up with a single taxon remaining, in many cases there may be a small number of taxa remaining, these can usually be differentiated by checking the images and other supplementary information, and
  • Once you have a potential answer, check its supplementary information to see if it matches.

Some tips to remember when using EUCLID

  • If the character you’re using is not obvious, check the notes that are available for any specific instructions (Remember that some characters are not always obvious and they can depend on people’s perceptions, while every effort has been taken to include all possible interpretations some will be missed, this can make some characters less powerful. Those which include colour and shape are obvious examples of this. Please remember to look at the images available for the character states; these may help to avoid misinterpretation, as coding has been done with these images in mind), and
  • If you are working with a plant or flower that has been grown in a glasshouse or other simulated environment, remember that these plants are growing under optimum conditions and that some of the plants' characteristics may be at the extremes of their naturally occurring habit. Things such as flowering time, leaf size and leaf thickness can be affected by optimum conditions. This should be kept in mind when using these types of characters to identify your specimen.