A comparative study of Pleurosigma subrectum and P. acus (Bacillariophyta)
Ceratolejeunea tahitensis, a new synonym of C. cornuta (Lejeuneaceae, Marchantiophyta)
Two new species of Ixora (Ixoroideae, Rubiaceae) endemic to the Philippines
New Crepidium species (Orchidaceae, Malaxidinae) from the Island of Negros, Philippines
A new species of Lindsaea (Lindsaeaceae, Polypodiopsida) from Mt. Hamiguitan, Mindanao, Philippines
Nepenthes barcelonae (Nepenthaceae), a new species from Luzon, Philippines