The Fruits and Seeds of Legume Genera of the World key provides 295 diagnostic characters (known as "features" in Lucid) with 1,107 states. With so many potential features to select, start with the "Recommended Features (START HERE)" group. Choose feature(s) from that list that are the most obvious or most simple to interpret. Select the state or states that match your unknown fruit or seed. Features may be selected in any order, and you do not need to choose a state for every feature. By selecting one or more states, the list of genera (or “entities” in Lucid) will be narrowed down to those that exhibit those states.
After choosing a few states, try Lucid’s "Best" button or wand icon in the key’s toolbar to further narrow down the possible genera. Best’s algorithm will open the feature that is most useful to score and discriminate between the possible genera. Continue working through the key by clicking the "Best" button. If the feature is unknown, then go back to the list and score a feature that you are confident about scoring.
Subsets of features are also available by selecting the Subsets button or diamond icon. You may choose more than one subset. After selecting a few states from this list, you can return to the full list of features.
Below is a list of additional hints originally written by the authors for a DELTA key. The authors converted the Delta key to a Lucid key, which is available here but did not provide hints for using the Lucid key. Hints specific to using the DELTA key tool have been removed.