!!!Contents of APG 59(1) Acta Phytotax. Geobot., Volume 59 (1), March 2008 *Kato, M. & C. Tsutsumi **Generic classification of Davalliaceae ....1 *Tamura, M. N. **Biosystematic studies on the genus ''Polygonatum'' (Asparagaceae) V. Taxonomic revision of species in Japan ....15 *Fujita, N. & M. N. Tamura **Two new varieties and one change of status in ''Hosta'' (Asparagaceae) ....31 *Kobayashi, T., K. Sasamura, K. Watanabe & J. Murata **''Arisaema inaense'' and ''A. nagiense'', two diploid species of the ''A. ovale'' Group (Araceae) ....37 *Murata, J. & S. Kakishima **''Arisaema maekawae'', a new species of the ''Arisaema serratum'' Group (Araceae) from Japan ....45 *Yamashita, J. & M. N. Tamura **A new species of ''Dioscorea'' (Dioscoreaceae) from Japan ....51 *Oda, J. & H. Nagamasu **Two new species of ''Carex'' sect. ''Capitellatae'' (Cyperaceae) from Japan ....55 *Shimizu, T. **''Carex kagoshimensis'', a new species of ''Carex'' (sect. ''Rhomboidales'') from Japan ....67 *Tsutsumi, C., T. Yukawa & M. Kato **''Liparis purpureovittata'' (Orchidaceae)-a new species from Japan ....73 New Names and Combinations ....78 Published March 25, 2008 The Japanese Society for Plant Systematics