Flowering plants
59 species| Photo | English | සිංහල | தமிழ் | Scientific name | IUCN | Endemic |
|---|---|---|---|---|---|---|
| Rubber Plant | — | சீமை ஆல் | Ficus elastica | LC | — | |
| Rubber Tree | — | — | Hevea brasiliensis | LC | — | |
| Rubber Vine | — | — | Cryptostegia grandiflora | — | ||
| Rubus leucocarpus | — | — | Rubus leucocarpus | — | ||
| Ruby Leaf | — | — | Alternanthera brasiliana | — | ||
| Rudraksh | — | — | Elaeocarpus ganitrus | — | ||
| Rungia longifolia | — | — | Rungia longifolia | — | ||
| Rungia pectinata | — | — | Rungia pectinata | — | ||
| Rungia repens | — | — | Rungia repens | — | ||
| Rusty Indigo | — | — | Indigofera colutea | — | ||
| Rusty Pittosporum | — | — | Pittosporum ferrugineum | LC | — |
