DELTA – DEscription Language for TAxonomy

DELTA logo

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 or interactive keys, cladistic or phenetic classifications, and information-retrieval systems.

Overview of the DELTA System

Programs and documentation •  Support and discussion: the DELTA-L mailing list

Data – descriptions, illustrations, identification, information retrieval

Methodology of interactive keys and descriptive databases

References – applications and documentation of the DELTA System

Contacts, citation, acknowledgements

Printing files obtained from this site


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