in Sri Lanka - Ministry of Environment

PortulacaceaePotamogetonaceae (Ruppia)Rhizophoraceae (Anisophyllea)Scrophulariaceae (Adenosma, Bacopa, Dopatrium,Limnophila, Microcarpaea, Scoparia, Stemodia)Scrophulariaceae (Artanema,Lindernia ,Torenia)Scrophulariaceae (Calceolaria)Scrophulariaceae (Centranthera, Pedicularis, Sopubia,Striga)Scrophulariaceae (Peplidium)SonneratiaceaeSterculiaceaeSymphoremaceaeTaccaceaeTheaceae (Adinandra,Eurya,Ternstroemia)TiliaceaeTrapaceaeTrichopodaceaeTurneraceae (Turnera)Ulmaceae (Aphananthe , Celtis, Gironniera,Trema)Valerianaceae (Valeriana)Verbenaceae (Aegiphila, Clerodendrum, Glossocarya,Gmelina, Premna , Vitex )ViscaceaeZingiberaceae (Costus)CactaceaeRuppiaceaeAnisophylleaceaePlantaginaceaeLinderniaceaeCalceolariaceaeOrobanchaceaePhrymaceaeLythraceaeMalvaceaeLamiaceaeDioscoreaceaePentaphylacaceaeMalvaceaeLythraceaeDioscoreaceaePassifloraceaeCannabaceaeCaprifoliaceaeLamiaceaeSantalaceaeCostaceaeSenaratne (2001) listed 4,143 flowering plant species in 1,522 genera belonging to 214families. According to her 25% of these are exotics and out of the exotics 32% are naturalized.During the preparation of this Red List the distribution data of each species were carefullyanalyzed by an expert panel and only those species which were undoubtedly native were usedfor evaluation. Thus, the total number of angiosperm species evaluated was 3,154. Thesespecies are in 186 families. Of these the Poaceae (grass family) has the largest number ofspecies (262 species). The ten largest angiosperm families in Sri Lanka are given in Table 2.Nearly 45% of all angiosperm species in the country are in those 10 families.Table 2. The 10 largest angiosperm families in Sri Lanka.FamilyNumber of SpeciesPoaceae 262Fabaceae 221Orchidaceae 184Rubiaceae 179Cyperaceae 170Acanthaceae 105Asteraceae 86Malvaceae 72Melastomataceae 71Lamiaceae 70343