1. Two new species of pittosporum (pittosporaceae) for the flora of thailand
Timothy M.A. Utteridge

2. Psammosilene tunicoides (caryophyllaceae) a new generic and species record for thailand
Somran Suddee, Thamarat Phutthai, Naiyana Tetsana, Theerawat Thananthaisong, Wittawat Kiewbang

3. New records of the genus psychotria (rubiaceae) from thailand
Teerawat Srisuk, Voradol Chamchumroon, Pimwadee Pornpongrungrueng

4. Begonia colliculata (begoniaceae), a new species from nam kading national protected area, bolikhamxai province, laos
Keooudone Souvannakhoummane, Soulivanh Lanorsavanh, Jeong Ho Park, Ho Sang Kang, Tai Hyeon Ahn, Singkone Xayalath, Chanhsamone Phongoudom

5. Heterostemma brownii (apocynaceae), a new record for laos and thailand
Woranart Thammarong, Sarayut Rakarcha, Michele Rodda

6. The cenozoic leaf morphotypes and palaeoclimate interpretation from the doi ton formation, mae sot district, tak province, western thailand
Atiwut Bunlam, Yupa Thasod, Pitaksit Ditbanjong, Rattanaporn Fongngern, Paul J. Grote

7. Notes on the typification of five names in lauraceae
Anand Kumar

8. A synopsis of thai piper (piperaceae)
Chalermpol Suwanphakdee, David A. Simpson, Trevor R. Hodkinson, Pranom Chantaranothai

9. Dimetra (oleaceae), a new genus record for lao pdr
Sarayut Rakarcha, Charun Maknoi, Wattana Tanming, Woranart Thammarong, Prateep Panyadee

10. Cardamine occulta (brassicaceae), a new name for the flora of thailand
Hans-Joachim Esser

11. Geraniaceae in thailand
Piyakaset Suksathan

12. Terminalia santisukiana (combretaceae), a new species from north-eastern thailand
Nannapat Pattharahirantricin, Manop Poopath

13. Lectotypification of porpax scaposa (orchidaceae)
Santi Watthana, Somran Suddee

14. Stemona fimbritepala (stemonaceae), a new species from northern laos
Sarayut Rakarcha, Wittaya Pongamornkul, Woranart Thammarong, Charun Maknoi, Keooudone Souvannakhoummane

15. Ten new species of globba section globba from continental south-east asia
Sunisa Sangvirotjanapat, Tran Hau Dang, Mark Newman

16. Notes on taxonomy of the genus argostemma (rubiaceae) from vietnam
Hai Thi Vu, Thanh Trung Nguyen, Hung Quang Nguyen, Khuong Duy Le, Truong Van Do