Kato, M., S. Koi & Y. Kita --- A new foliose-rooted genus of Podostemaceae from Thailand with a note on root evolution ....65

Nagamasu, H. & Mak. Kato --- Nothapodytes amamianus (Icacinaceae), a new species from the Ryukyu Islands ....75

H殻kinen, M. --- Musa voonii, a new Musa species from northern Borneo and
discussion of the section Callimusa in Borneo .... 79

Nakato, N., N. Sahashi & M. Kato --- Cytotaxonomy of the Thelypteris japonica Complex (Thelypteridaceae) .... 89

Shiga, T. & Y. Kadono --- Morphological variations and classification of Nuphar with special reference to the populations in central to western Japan ....107

Okada, H. --- Germination response of seeds of Aconitum grossedentatum (Ranunculaceae) to temperature and its significance to the expansion of the distribution ....119

Short communication
Aoki, K., T. Hattori & N. Murakami --- Intraspecific sequence variation of chloroplast DNA among the component species of evergreen broad-leaved forests in Japan II ....125

Naiki, A. & H. Nagamasu --- Unusual flowering shoots of Damnacanthus (Rubiaceae) ....129