1. Is there a Podostemum type of embryo sac in the genus Farmeria?;Arekal;Caryologia,1975
2. Embryo sac of Hydrobryopsis sessilis (Podostemaceae) — origin, organization and significance;Arekal;Bot. Notiser,1975
3. A new type of embryo sac organization in angiosperms;Arekal;Curr. Sci.,1976
4. Female gametophyte of Zeylanidium (Podostemaceae) — a clarification;Arekal;Phytomorphology,1977
5. The female gametophyte in two Indian genera of Tristichoideae (Podostemaceae) — A reinvestigation;Arekal,1977