We present the model and implementation of a workflow that blazes a trail in systematic biology for the re-usability of character data (data on any kind of characters of pheno- and genotypes of organisms) and their additivity from specimen to taxon level. We take into account that any taxon characterization is based on a limited set of sampled individuals and characters, and that consequently any new individual and any new character may affect the recognition of biological entities and/or the subsequent delimitation and characterization of a taxon. Taxon concepts thus frequently change during the knowledge generation process in systematic biology. Structured character data are therefore not only needed for the knowledge generation process but also for easily adapting characterizations of taxa. We aim to facilitate the construction and reproducibility of taxon characterizations from structured character data of changing sample sets by establishing a stable and unambiguous association between each sampled individual and the data processed from it. Our workflow implementation uses the European Distributed Institute of Taxonomy Platform, a comprehensive taxonomic data management and publication environment to: (i) establish a reproducible connection between sampled individuals and all samples derived from them; (ii) stably link sample-based character data with the metadata of the respective samples; (iii) record and store structured specimen-based character data in formats allowing data exchange; (iv) reversibly assign sample metadata and character datasets to taxa in an editable classification and display them and (v) organize data exchange via standard exchange formats and enable the link between the character datasets and samples in research collections, ensuring high visibility and instant re-usability of the data. The workflow implemented will contribute to organizing the interface between phylogenetic analysis and revisionary taxonomic or monographic work.Database URL: http://campanula.e-taxonomy.net/

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The Caryophyllales Network strives to assemble an online dynamic synthesis of the order Caryophyl lales, uniting the current knowledge about the phylogeny of the order with up-to-date information on the individual taxa contained. Capturing taxonomic data and the decision processes involved in the definition and circumscription of the taxa requires highly complex specialized software. The Caryophyllales Network uses the EDIT Platform for Cybertaxonomy for that purpose. In the context of the online treatment of the family Nepenthaceae, we describe the steps taken to assemble the database, the interaction with other electronic sources, the links with the World Flora Online initiative, and the prospects for the maintenance and further development of the Nepenthaceae segment of the Caryophyllales database. Nepenthaceae constitute an example of a family with a relatively recent flora treatment (Flora Malesiana, published in 2001), which to a large extent covers its total range of distribution, but with further species subsequently described as new to science in mostly regional treatments, and with an analysis of relationships and species limits on the basis of evolutionary methods just emerging. A snapshot of the current state of the database is provided as an annotated checklist in PDF format in the Supplementary Material online, which includes 176 species and nine naturally occurring named hybrids and treats 435 species and infraspecific names.