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R.
Sawvel, N. Snow, G. P. Guymer, G. Sawvel
(counter courtesy of www.123counters.com)
This project represents a capstone undergraduate experience of Rose Sawvel as part of her BS degree at the University of Northern Colorado, Greeley, Colorado, 80639. Suggested Citation:
Sawvel, R., N. Snow, G. P. Guymer, G. Sawvel. 2005 onwards. An on-line Lucid key to the Australian Species of Gossia (Myrtaceae). asstudents.unco.edu/students/Lucid_Myrtaceae/GossiaAustraliaRev.htm
This on-line interactive key is provided to help taxonomists, ecologists, and others quickly identify members of the genus Gossia from Australia. Although a few minor additions and changes have been made using specimens at the University of Northern Colorado herbarium (GREE), the character state data for the key primarily are based on:
Snow, N., G. P. Guymer, G. Sawvel. 2003. Systematics of Austromyrtus, Lenwebbia, and the Australian species of Gossia (Myrtaceae). Systematic Botany Monographs 65: 1-95.
The present version of the key was written using Lucid Builder 2.1. Future plans are to attach text and digital images of the species.
Corrections and Omissions: Please communicate these by e-mail to neil.snow [at] unco.edu.
Lucid Player Features:
Lucid
Player has many features to help users make a correct identification beyond the
normal “add-on” types of information (e.g., text boxes, images, distribution
maps, etc.). A brief summary of
features included in Lucid Player Plus include:
1. Error tolerance:
Allows user to increase “tolerance” for incorrect selections of character
states (by the user) and still have taxa be retained in the list of possible
matches. This is particularly helpful
for large or difficult groups, especially if they are not a taxonomic specialty
of the user.
2. Character sets: Creator of the key can create various “sets”
of characters, any of which can be invoked.
For example, a key might have an “Asteraceae” set of characters if it
included this family (which typically is species-rich for a given region). AusGrass, for example, has a “Best
and Simplest” set of 24 characters which, according to the authors, should work
in nearly all cases. Another set is
“fertile lemma”, which helps identifications in Panicoideae (one of the larger
subfamilies). The “All” set for AusGrass includes 226 characters.
3. Prune redundants: User can invoke this option at any stage,
which deletes from the character list any character which (at that stage of
analysis) will no longer aid in separating among remaining list of possible
taxa. This is very helpful for large
data sets.
4. Best: This feature ranks the remaining character
states by their potential ability to help the users eliminate some of the
remaining taxa. (Return native order reorganizes characters as
originally).
5. Bingo: This feature also presents a list of
characters. If the specimen has any of
the states listed it will be correctly identified by that character. Typically this option is invoked at some point
after using Prune redundants and/or Best options.
6. Why discarded?:
For taxa among those disqualified as a potential match, indicates which
character state(s) were selected that caused the taxon to be removed as a
potential match.
7. Most similar taxa:
Using overall similarity of character states, the computer indicates which taxa
most closely resemble a taxon highlighted on the screen.
8. Similarities and
differences: This option indicates
how taxa are similar to and different from a taxon highlighted on the screen.
9. Get Score: Shows
how one selected taxon was scored for a particular character.
10. Describe: Shows a list (on screen or printed) of how
each character was scored for a given taxon; it effectively serves as the
on-screen equivalent of a taxonomic description.
11. Save session:
Allows user to save the sequential set of character state and other selections,
which is useful if a user needs to continue a session later, or if numerous
specimens must be keyed out (for example) in a particular genus or family.
12. View log:
Provides user with a step-wise review of character states chosen, and other
selections made, to that point in the identification process.
13. Find: Allows
users to quickly find a word or phrase (e.g. “blue”) in any of the four windows
on the screen or in the “add-on” information (contained in text boxes of the
taxa).
14. Print: Contents
of most windows can be printed or copied to a disk for other purposes.
