| Species | Habit | Malayalam | English |
| Abelmoschus angulosus var. angulosus | Shrub | Kattukasthuri, Kaattusembarathi | |
| Abelmoschus angulosus var. grandiflorus | Shrub | | |
| Abelmoschus angulosus var. purpureus | Shrub | | |
| Abelmoschus moschatus | Shrub | Kattukasthuri, Kasthurivenda, Lathakasthuri | Ambrette plant, Musk mellow, Muskseed |
| Abutilon hirtum | Shrub | Oorakam | |
| Abutilon indicum var. guineense | Shrub | | |
| Abutilon indicum var. indicum | Shrub | Kaluram, Kattooram, Oorpam, Ooram, Thuthi, Velluram, Vennkurunthotti, Indian Mallow | Country mallow, Indian mallow |
| Abutilon neilgherrense | Shrub | | |
| Abutilon persicum | Shrub | Thuththi, Persian Mallow | |
| Abutilon ramosum | Shrub | | |
| Abutilon striatum | Shrub | | |
| Acalypha amentacea ssp. wilkesiana | Shrub | | Beefsteak Plant, Fire Dragon Acalypha |
| Acalypha capitata | Shrub | | |
| Acalypha ciliata | Shrub | | |
| Acalypha fruticosa | Shrub | Balamunja, Chini, Kuppameni, Sinnimaram | Birch leaved acalypha |
| Acalypha hispida | Shrub | Poochavalan, Vattapoonthaliyari | Cat's tail, Chenille plant, Red-hot cat's tail, Foxtail, Red Hot Poker |
| Acanthus ebracteatus | Shrub | | |
| Acanthus ilicifolius | Shrub | Chulli, Chullikandal, Chakkaramullu, Chakkaramulli, Mendli, Moranna, Muthalamookku, Payinjachulli | |
| Acanthus montanus | Shrub | | |
| Adenium obesum | Shrub | Desert Rose | Desert Rose, Impala Lily |
| Aegiceras corniculatum | Shrub | Pookandel | |
| Aeschynanthus perrottetii | Shrub | | |
| Aeschynomene aspera | Shrub | Neerkadasam, Ponguchedi | Pith plant |
| Agave americana | Shrub | Aanakaitha, Agevu, Athirakaitha, Eroppakaitha, Kandalachedi, Panam-kattazha | Century plant, American aloe |
| Agave salmiana var. ferox | Shrub | | |
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