Mr Yu Ito; Mr Anders S. Barfod

“ Situated within the Indo-Myanmar (Burma) hot-spot, this area is among the richest in biodiversity in the World ( [1] ) , with the estimated biodiversity being much higher than has been previously reported. The area is geographically diverse, going from cool-temperate to tropical and from the coast to rainforests to high mountains ( [2] ) .
The aquatic floras of Myanmar and Thailand have been separately investigated. The Flora of Thailand project was launched in the 70’s, led by European and Thai herbaria and institutions. The aquatic species were treated in separated volumes (Table 1) . ”

“ Another monotypic genus Barclaya is among the tropical Asian endemics. The genera Aponogeton (Aponogetonaceae) , Blyxa, Najas, (Hydrocharitaceae) , Myriophyllum (Haloragaceae) , Nymphoides (Menyanthaceae) , Monochoria (Pontederiaceae) , Utricularia (Lentibulariaceae) have their center of diversity in tropical Asia.
On a species level, the distribution is further classified into three groups: 1) Indo-China, 2) Southeast Asian, and 3) endemic to Myanmar and Thailand. ”

“ The species clustered in this category are distributed mainly in cool-temperate region of Eurasia, thus limiting the distribution to a small portion of Southeast Asia (Myanmar: Shan state; Thailand: Northern states) . ”