CONTENTS

Kato, M.
Taxonomic studies of Podostemaceae of Thailand. 2. Subfamily Podostemoideae with ribbon-like roots and subfamily Tristichoideae ....1-54

Hakkinen, M.
Musa barioensis, a new Musa species (Musaceae) from northern Borneo ....55-60

Okada, H.
A new species of Aridarum, Schismatoglottideae, Araceae from the Muller Range, Central Kalimantan, Indonesia ....61-64

Ibaragi, Y.
Arundinella riparia subsp. brachyaristata Ibaragi (Gramineae), a new rheophilic grass from Shikoku, Japan ....65-73

Takano, A. & H. Nagamasu
A new species, Etlingera palangkensis (Zingiberaceae) from Borneo ....75-79

Gale, S., A. Maeda & N. Kuroiwa
Observations on the phenology and reproductive success of the critically endangered Nervilia nipponica (Orchidaceae) in Kochi Prefecture, Japan ....81-93

Terada, Y. & M. Takamiya
Cytological and genetic study of two putative hybrids and their parents of Athyrium (Woodsiaceae; Pteridophyta) in Yakushima Island, southwestern Japan ....95-106

Short communication

Sakai, S. & H. Nagamasu
Notes on inflorescence structure of Boesenbergia (Zingiberaceae) ....107-111