| title | ISBN-13 | year of publication |
|---|---|---|
| Asteraceae: Cladistics and Classification | 978-0-88192-275-2 | 1994 |
| Introduction To Phylogeny & Systematics Of Flowering Plants | 978-91-554-5828-7 | 2003 |
| Taxonomy of Memecylon in Ceylon | 978-91-546-0263-6 | 1979 |
| The genus Relhania | 978-91-546-0196-7 | 1976 |