| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Illustrated Field Guide to the Flowers of Sri Lanka | 978-955-1917-00-5 (955-1917-00-6) | 2008 | Johanna De Vlas-De Jong |
| Illustrated Field Guide to the Flowers of Sri Lanka, Volume 2 | 978-90-823134-0-6 (90-823134-0-5) | 2015 | " |