Second Circular


Message from the Organising Committee Chairman



Mr. Damrong Phidet, Director General, Department of National Parks, Wildlife and Plant Conservation

Mr. Rerngchai Prayoonwet, Deputy Director General, Department of National Parks, Wildlife and Plant Conservation

Dr. Theerapat Prayurasiddhi, Deputy Director General, Department of National Parks, Wildlife and Plant Conservation

Mr. Manopat Huamuangkaew, Deputy Director General, Department of National Parks, Wildlife and Plant Conservation

Director, Forest and Plant Conservation Research Office
Dr. Chamlong Phengklai, The Forest Herbarium



Prof. Thawatchai Santisuk, Editor, Flora of Thailand, The Forest Herbarium



Mr. Thawatchai Wongprasert, The Forest Herbarium
Dr. Kongkanda Chayamarit, The Forest Herbarium
Dr. David A. Simpson, Royal Botanic, Gardens, Kew
Prof. Peter van Welzen, Leiden, The Netherlands



Program Co-ordinator:


Dr. Rachun Pooma, The Forest Herbarium



Ms. Nannapat Phatharahirantricin, The Forest Herbarium



Dr. Voradol Chamchumroon, The Forest Herbarium



Mr. Manus Roudreiw, The Forest Herbarium


  Address: The 15th Flora of Thailand Meeting Organizing Committee
The Forest Herbarium
Department of National Parks, Wildlife and Plant Conservation
61 Phahonyothin Road, Chatuchak, Bangkok 10900 Thailand
Tel & Fax: +662 579 6666 ext. 1476 


Scientific Program Committee:

Prof. John Parnell, Trinity College, Dublin, Irland
Prof. Henrik Balslev, Aarhus University, denmark
Prof. Pranom Chantharanothai, Khonkaen University, Thailand
Prof. Richard Saunders, School of Biological Sciences, The University of Hong Kong, Hong Kong

Dr. Mark Newman, Royal Botanic Garden, Edinburgh, UK
Dr. David Middleton, Royal Botanic Garden, Edinburgh, UK
Dr. Paul Wilkin, Royal Botanic Gardens, Kew, UK
Dr. Hans-Joachim Esser, Botanische Staatssammlung Muenchen, Germany
Dr. George W. Staples, Singapore Botanical Gardens, Simgapore
Dr. Somran Suddee, The Forest Herbarium, Thailand
Dr. Kitichate Sridith, Prince of Songkla University, Thailand
Dr. Piyakaset Suksathan, Queen Sirikit Botanic Garden, Chiang Mai, Thailand

Committee members will select the 3 best oral presentations and posters for awards. The committee will also select papers to publish in the Proceedings, which will be a special issue of the Thai Forest Bulletin (Botany) for publication in 2012.


Letter of Invitation:

If you require an official letter of invitation, please contact Dr. Rachun Pooma at Participants from abroad may require a visa to enter Thailand. Please contact the Thai embassy or consulate in your own country for further information.


Registration Fee:
There will be no registration fee. Lunch and coffee/tea will be served at no charge during the meeting. Welcome and farewell dinners will be also served at no cost.




Arrival and registration



Board Meeting



Day 2, 8 November (Tuesday)





Opening ceremony and welcome address

DNP Director General


Welcome speech

Thawatchai Santisuk, Editor, Flora of Thailand, The Forest Herbarium


Overarching Topics



Is it really worthwhile revising the same flora repeatedly? A case study in Thai Orchidaceae

Henrik Pedersen, Botanical Garden & Museum, Natural History Museum of Denmark, University of Copenhagen


Global Plants Initiative and JSTOR Plant Science: an online database of over a million type specimens and supporting data

Michael Gallagher, JSTOR/ITHAKA


Collaboration between Chiang Mai and Aarhus Universities

Henrik Balslev, Department of Biological Sciences, Aarhus University



Floristic Regions in Thailand and Regional Floras
Chairman: Henrik Balslev


Floristic regions in Thailand, now and in the future

Peter van Welzen, NCB Naturalis (NHN branch), Leiden University


Flora of Peninsular Malaysia

Richard Cheng Kong Chung, Forest Research Institute, Malaysia


Flora of China: Progress and prospect

Jinshuang Ma, Shanghai Chenshan Plant Science Research Center, Chinese Academy of Sciences




Biogeography and Regional Floras
Chairman: John Parnell



The origin and distribution of Magnolias 

Hans Nooteboom, NCB Naturalis (NHN branch), Leiden University


Species distribution modeling as a tool to unravel determinants of palm distribution in Thailand

Jantrararuk Tovaranonte, Ecoinformatic and Biodiversity Group, Department of Bioscience, Aarhus University


Biogeography of Banana species and subspecies in Thailand 

Sasivimon Swangpol, Department of Plant Science, Faculty of Science, Mahidol University


Biogeography of Podostemaceae

Masahiro Kato, Department of Botany, National Museum of Nature and Science, Tsukuba, Japan


Podostemaceae in Laos

Satoshi Koi, Graduate School of Biological Sciences, Nara Institute of Science and Technology, Japan




Taxonomy and Systematics 1
Chairman: David Middleton



Fossil Macaranga and Mallotus: what to believe?

Peter van Welzen, NCB Naturalis (NHN branch), Leiden University


Systematics and Evolution of tribe Merremieae


Ana Rita Simoes, National History Museum, UK

15.40-16.00 The diversity of Dracaena L. in Thailand Paul Wilkin, Royal Botanic Gardens, Kew
16.00-16.20 Diversity of basils and allies (Lamiaceae) in Thailand and elsewhere Alan Paton, Royal Botanic Gardens, Kew


Systematics of the genus Gmelina L. in Southeast Asia           

Mohammad Harun-Ur Rashid, University of Chittagong


Poster session/group photo



Welcome dinner


Day 3, 9 November (Wednesday)


Taxonomy and Systematics 2
Chairman: Peter van Welzen



Systematic of the genus Derris Lour. (Fabaceae) and its closely related genera in Thailand

Yotsawat Sirichamorn, NCB Naturalis section Nationaal Herbarium, the Netherlands


Systematics of Mezoneuron – a genus distinct from Caesalpinia?           

Ruth Clark, Royal Botanic Gardens, Kew


Recent changes in generic delimitation in the Annonaceae flora of Thailand

Richard Saunders, The University of Hong Kong


The revision of Ficus subsection Urostigma (Moraceae)    

Bhanumas Chantarasuwan, NCB Naturalis section, Nationaal Herbarium, Nederland


 A systematic monograph of the liverwort genus Thysananthus (Marchantiophyta: Lejeuneaceae)           

Phiangphak Sukkharak, Department of Systematic Botany, University of G?ttingen




Molecular, Morphological and Chemotaxonomic Studies
Chairman: David Simpson



A preliminary study on the molecular phylogeny of Balsaminaceae in Thailand    

Saroj Ruchisansakun, Department of Plant Science, Mahidol University


Genetic diversity of Azadirachta indica A. Juss.: suggestion on the nomenclature of Thai neem as Azadirachta siamensis

Suchitra Chantragoon, Department of National Parks, Wildlife and Plant Conservation


Morphological characters of Oberonia Lindl. (Orchidaceae) in Thailand: a preliminary study.

Kanokon Bunpha, Prince of Songkla University

11.30-11.50 A chemotaxonomic study of Gomphostemma Wall. ex Benth. and related genera Bhanubong Bongcheewin, Birkbeck College, University of London




Ecology and Conservation
Chairman: Kitichate Sridith



Field surveys of Liparis L.C. Rich. (Orchidaceae) in Thailand: A preliminary study. 

Naiyana Tesana, Prince of Songkla University


Plant communities in fast-flowing streams of peninsular Thailand 

Milica Stankovic, Prince of Songkla University


Evergreen forest types in Cambodia: floristic composition, ecological characteristics, and conservation status

Ida Theilade, Forest & Landscape, University of Copenhagen


Conservation for rare Thai Convolvulaceae

George Staples, Singapore Botanic Gardens

14.20-14.40 Thai Xyridaceae: now (2011) and then (1987) Phongsak Phonsena, Khon Kaen University




The Flora of Thailand: Monocotyledons
Chairman: Paul Wilkin



Progress on the Flora of Thailand Poaceae

David A. Simpson, Royal Botanic Gardens Kew


Progress on the taxonomy of Digitaria Haller (Poaceae) in Thailand

Boonchuang Boonsuk, Department of Biology, faculty of Science, Khon Kaen University


Systematics of the genus Eragrostis Wolf (Poaceae) with particular reference to Thailand

Wanwipha Chaisongkram, Khon Kaen University

16.00-16.20 Liliaceae sensu lato in Thailand     Minoru N. Tamura, Department of Botany, Graduate School of Science, Kyoto University


Zingiberaceae in the Flora of Thailand   

Mark Newman, Royal Botanic Garden, Edinburgh


Revising Etlingera (Zingiberaceae) for the Flora of Thailand: the scientific name of reo hom (àÃèÇËÍÁ)

Axel Dalberg Poulsen, Natural History Museum, University of Oslo


Newmania, a new ginger genus from central Vietnam

Jana Leong-Skornickova, Singapore Botanic Gardens


Thai Biogeography Group Meeting



Free evening


Day 4, 10 November (Thursday)


One-day excursion to Ban Mae Kham Pong, San Kam Phaeng district in the morning and to Doi San Yao, Khun Jae National Park in the afternoon.
Loy Krathong Festival, night sightseeing will be organised, especially for foreign participants.


Day 5, 11 November (Friday)


The Flora of Thailand: Dicotyledons 1
Chairman: Richard Saunders



Taxonomic notes and novelties in the genus Polygonum s.l. (Polygonaceae) from Thailand

Chortip Kantachot, Ubon Ratchathani University


Thai Vitaceae updated 

Anna Trias Blasi, Royal Botanic Gardens, Kew


 Diversity of Miliusa, Marsypopetalum, Trivalvaria, Neo-uvaria, and two new genera (Annonaceae) in Thailand

Tanawat Chaowasku, NCB Naturalis, section NHN, Leiden University, the Netherlands


 Taxonomic note on Thai Artabotrys R.Br. (Annonaceae)

Wichan Eiadthong, Department of Forest Biology, Faculty of Forestry, Kasetsart University




The Flora of Thailand: Dicotyledons 2
Chairman: George Staple



The Gesneriaceae in Thailand

David Middleton, Royal Botanic Garden, Edinburgh

11.00-11.20 New insights in the relationships between Paraboea, Trisepalum and Phylloboea (Gesneriaceae) Carmen Puglisi, Royal Botanic Garden, Edinburgh
11.20-11.40 Taxonomic studies in Thai Paraboea, Phylloboea and Trisepalum              Pramote Triboun, Bangkok Herbarium


Balsaminaceae of Thailand    

Piyakaset Suksathan, Queen Sirikit Botanic Garden, Chiang Mai




The Flora of Thailand: Dicotyledons 3
Chairman: Hajo Esser



Pittosporaceae and Dichapetalaceae of Thailand  

Paul J. Grote, Suranaree University of Technology


 A preliminary study of the genus Psychotria L. (Rubiaceae) in Thailand    

Voradol Chamchumroon, Forest Herbarium


An outline of Campanulaceae in Thailand 


Brigitta Duyfjes, NCB Naturalis (NHN branch), Leiden University


A preliminary study of the genus Garcinia L. (Clusiaceae) in Thailand          

Chatchai Ngernsaengsaruay, Department of Botany, Faculty of Science, Kasetsart University




The Flora of Thailand: Dicotyledons 4

Chairman: Mark Newman



 Notes on some southeastern species of the Euonymus L. (Celastraceae R.Br.)  

Ivan Savinov, Moscow State University of Applied Biotechnology


 The genus Begonia L. (Begoniaceae) of Thailand        

Thamarat Phutthai, Department of Biology, Faculty of Science, Prince of Songkla University

15.20-15.40 Taxonomic revision and biogeography of the Memecylaceae of Thailand Lahiru Wijedasa, Singapore Botanic Gardens & Royal Botanic Garden, Edinburgh


 A multi-access key to the ferns of Thailand    

Stuart Lindsay, Royal Botanic Garden, Edinburgh

16.00-16.30 Board report  


Closing and awards for oral presentations and posters



Closing dinner


Oral presentations will be in English and 20 minutes will be allowed for each presentation including questions and discussion. Poster presentations should be 120 cm high and 80 cm wide. Display boards and tapes will be provided at the meeting. Poster presenters should stand by their posters during the poster sessions to answer questions and for discussion.


The Chiang Mai Orchid Hotel <website:> has been selected for the meeting and is offering special discounted room rates (breakfast included) for participants of the 15th Flora of Thailand Meeting. Wireless internet connection is free and available only in Deluxe rooms. All rates are in Thai Baht.


1000 THB per night (Single, Superior room)
1100 THB per night (twin, Superior room)


1200 THB night (Single, Deluxe room)
1400 THB per night (twin, Deluxe room)


For reservations, please fill in a hotel reservation form and return it to Dr. Rachun Pooma by email at Participants can also arrange their own accommodation.


Excursions and Other Activities:

A full day botanical excursion is offered free of charge on the 10th November (Loy Krathong Festival Day), to Ban Mae Kham Pong, San Kam Phaeng district in the morning and to Doi San Yao, Khun Jae National Park in the afternoon. To reserve a place, please fill in an excursion form and return it to Dr. Rachun Pooma by email at Participants can also arrange their own city tour.


Morning trip: Ban Mae Kampong (ºéÒ¹áÁè¡Ó»Í§) is situated in Mae On district, about 50 kilometers east of Chiang Mai and is one of the most well known community-based ecotourism sites in Chiang Mai. The village is located in the deep valley in mountainous area of Doi Mon Lan and the weather is relatively cool all year round. There are many attractions for nature tours such as Mae Kam Pong and Tarn Thong waterfalls. The route will pass through rural areas from Chiang Mai to San Kam Phaeng and to Mae On, ranging from 350-1100 m elevation. Habitat ranges from mixed deciduous to dry evergreen and lower montane forests, with a diverse range of species along the waterfall and mountain trails. Climbing up to Kieo Phin (¡ÔèǽÔè¹), ca 1500 m altitude, the border to Jae Son National Park inLampang Province, can be also possible by car. Lunch will be provided.


Mae Kam Pong village

Mae Kam Pong waterfalls

Kieo Phin at 1,517 m altitude


Afternoon trip: Doi San Yao is located in Khun Jae National Park and situated on the boundary ridge between Chiang Mai and Chiang Rai. The main vegetation is lower montane pine-oak forest where a rare three-angled oak, Trigonobalanus doichangensis (A. Camus) Forman, and a recent described species, Aquilaria rugosa K. Le-Cong & Kessler, one of the most precious agarwood trees can be found in the upper elevation. A short walk along a nature trail is recommended.


Trigonobalanus doichangensis (A. Camus) Forman

Lower montane oak forest, on ridges; mountain range in Mae Takrai NP can be seen in the background



Herbarium visit

Arrangements can be made for those who would like to visit the herbaria in Chiang Mai listed below. Please fill in a herbarium visit form and return it to Dr. Rachun Pooma by email at



  • Chiang Mai University, Biology Department Herbarium (Pharmacy Department Herbarium will also be possible)
  • Queen Sirikit Botanic Gardens Herbarium


  Loy Krathong Festival  

Loy Krathong, also known as “Yi Peng” in Chiang Mai, takes place on the full moon night of the 12th month in the traditional Thai lunar calendar, which this year is on the 10th November. Traditionally, a krathong is made and decorated with banana leaves, flowers, candles and incense sticks and is floated on a river, canal or a pond during the night. The festival is for pays respect to the spirit of the waters, floating away bad luck. In Chiang Mai, many sky lanterns (khom loi) are also launched. here are also fireworks, colourful parades of large krathongs and beauty contest (Nang Noppamas) during the festival celebrations, especially along the Ping River.



floating Krathong

Khom Lois being launched


General Information:


The climate in Chiang Mai is tropical with high humidity. In November, the night temperatures start to cool and rain becomes less likely. A light jacket may be necessary.


  Participants should inform Dr. Rachun Pooma by email at of their arrival time and flight number at Chiang Mai Airport. Transportation will be arranged from Chiang Mai Airport to the Meeting hotel (Chiang Mai Orchid Hotel). Participants travelling to Chiang Mai other than by air will need to arrange their own transportation to the hotel.


Last updated: 20 October 2011