Systematics is the classification of living organisms and the evolutionary
relationships among them. Classic reference books for the identification of species
such as Jepson use the concept of paired, mutually exclusive keys. A key is
a verbal statement that divides a set of objects into progressively smaller
subsets until all possibilities but one have been eliminated.
Software to develop and use systematic keys is useful to groups studying all types
of living organism, thus some of the software listed below works equally well for plants,
animals, bacteria, and viruses.
Cistus villosus 'Lasca select'
IntKey & DELTA
|The DELTA format (DEscription Language for
TAxonomy) is a flexible method for encoding taxonomic descriptions
for computer processing. DELTA-format data can be used to produce
natural-language descriptions, conventional and interactive keys,
and cladistic and phenetic classifications.
|M. J. Dallwitz
|18 MB disk space
|Database system for taxonomic and biodiversity
research projects, such as floras or monographs. Compatible with
|Royal Botanic Garden Edinburgh
|full version available without charge
XID Authoring System
|System for creating your own key-based
|Pullman, WA, USA
|demo available for download via Internet
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The software products and descriptions on this page are
provided for comparison and informational purposes only. Crescent Bloom
does not recommend any of these products, other than The Compleat Botanica, nor
does it endorse the companies which offer them.