ABSTRACT:

During routine studies of pollen grains, we came across a peculiarity of pollen formation in Chlorospatha longipoda. Most aroids shed the pollen grains in monads; only two genera, Xanthosoma and Chlorospatha, shed their pollen grains in tetrads. Usually the four pollen grains in a tetrad are arranged tetrahedrally, but Chlorospatha longipoda also has linear tetrads in which the four pollen grains are arranged in a serial sequence.