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.
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
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
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 orange
information button next to the character state name.
Alternatively you can choose your states in the character graphics window
by clicking on the 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 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
or next arrow button to get the character you want or close the window and
go back to the list.
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.
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
and tick Fruit and Leaves, this will reduce the number of characters
for you to choose from.
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.
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
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.
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.
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.
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.
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.
supplementary information: To view the supplementary information
associated with each taxon, click on thegreen
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
- 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,
- the Lucid Help for more detailed notes on Lucid (Help on menu
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,
- 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.