Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 1-5

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 7-18

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 19-24

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 25-39

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 41-45

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 47-53

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 55-79

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 81-132

Published in Gardens' Bulletin, Singapore, in 2006, in volume 58, issue 1, pages 133-139