J. P. van der Meer

• A comment on Gracilaria verrucosa (Huds.) Papenf. (Rhodophyta: Gigartinales)
• Chromosome numbers of Gracilaria foliifera and Gracilaria sp. (Rhodophyta) and attempted hybridizations
• Interspecific, intraspecific and nutritionally-determined variations in the composition of agars from Gracilaria spp