1. Water plants;Arber,1920
2. Additional notes on Farmeria indica Willis (Podostemaceae);Arekal,1974
3. Saltational evolution of form in vascular plants: a neo-Goldschmidtian synthesis;Bateman,1994
4. Embryological questions. 11. Has the debated case of Podostemaceae been resolved?;Battaglia;Annali di Botanica (Roma),1987
5. Plant Form;Bell,1991