Illustrated World Compendium of Orchids

URL: http://worldplants.webarchiv.kit.edu/orchids/index.php

Michael Hassler & Joachim Rheinheimer, Version 3.4. Covering 31,595 taxa, 28,166 species and 48,002 synonyms. With 8402 pictures of 5191 taxa. In cooperation with Heidelberg University Botanical Garden, Karlheinz Senghas(†), Botanical Garden of the Karlsruhe Institute of Technology. With special support by: Andys Orchids, Encinitas, California, Carl Luer, Sarasota, Florida, Marie Selby Botanical Gardens, Sarasota, Florida.

Checklist of Ferns and Lycophytes of the World

URL: http://worldplants.webarchiv.kit.edu/ferns/index.phpBy Michael Hassler and Bernd Schmitt, Version 5.12. Covering 14,327 taxa, 12,634 species and 46,380 synonyms. Including 4,259 pictures of 1,282 species. With special support by Ralf Knapp (Taiwan). In cooperation with Botanical Garden of the Karlsruhe Institute of Technology.