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2. Is there a Podostemum type of embryo sac in the genus Farmeria?;Arekal;Caryologia,1975
3. Embryo sac of Hydrobryopsis sessiles (Podostemaceae) – origin, organization and significance;Arekal;Bot. Notiser.,1975
4. A new type of embryo sac organization in angiosperms;Arekal;Curr. Sci.,1976
5. Female gametophyte of Zeylanidium (Podostemaceae) – a clarification;Arekal;Phytomorphology,1977