Your Characters Available window should reduce from 113 to 57 characters.
4. From the Characters Available window, scan the list of characters for one you think you can answer. We suggest that you try the character Leaf blade shape first.
5. Click with the mouse on the text of the character Leaf blade shape. It will open up like this:
In our case, the image of the leaf shows that it is falcate (sickle-shaped or curved). If you want to check, click on the button beside the state sickle-shaped or curved. A window appears where all the shapes are illustrated as line drawings, and each accompanied by a brief definition.
6. The state falcate (sickle-shaped or curved) is your answer to this character. Choose it by either:
7. Look at the list of Taxa Remaining (above). You will see from the window that there are 354 taxa with sickle-shaped or curved leaves. Still a way to go, but note that this one character has eliminated 336 taxa (listed in Taxa Discarded).
8. Try a metric character next. The leaf pictured in the tutorial images is 30 cm long and 5 cm wide. Choose the character Leaf blade width. After double-clicking beside the symbol #, a small window like this pops up:
The window tells you the range of values that are possible for this character in this case, no species in the remaining set of 354 taxa has leaves narrower than 0.3 cm or wider than 7 cm (this is useful for giving the absolute outer limits for your answer). Type into the box the value 5 and click on the OK button. You will see from Taxa Remaining that we are now down to 25 taxa.
9. Now try the character Number of buds or flowers per umbel. In eucalypts, the umbel is the unit cluster of buds or flowers. The tutorial images above show that there are three buds per umbel. As before, double-click or drag the words three-flowered to make your selection. You are now down to 8 taxa.
10. Next try the character Fruit pedicel. You may have noticed already from the tutorial images that each fruit lacks a stalk. Choose absent (sessile) and our list from Taxa Remaining is now down to 3.
11. Where do you go from here? Lets say that youre stuck, and want to ask the key to suggest the best character to answer next. You can do this using Lucids Best function.
You can use Best in two ways. The first is called a Sort Best, and will sort all the characters in Characters Available, from best (most discriminating) to worst (least discriminating). The second is called Find Best. Rather than sorting all the characters (sometimes a slow process), Find Best goes to, and opens, the best character. Two buttons appear on the toolbar which allow you to go forward to the next best or back to the previous best character. Note that Best is usually used when you are some way through your identification, so that the list of Taxa Remaining is fairly short. Find Best is faster than Sort Best.
So, lets try a Sort Best, since we only have a few taxa remaining. First, check which Best option is current go to the Characters menu and click on the item Best Options. The current option has a checkmark alongside it (if Find BEST character has the tick, click on Sort Characters on BEST).
Now click the Best button on the toolbar. Wait a little while Lucid
assesses, then sorts, the characters.
12. Now look at the accessory information for our species, by clicking on the button alongside it. Open up the Notes and click on Fact Sheet to read the description to compare it with the pictures we started with, or look at the EUCLID images of the species. If the accessory information matches, then you can be confident that you have correctly identified your species.