Trees & flowers
238 species| Photo | English | සිංහල | தமிழ் | Scientific name | IUCN | Endemic |
|---|---|---|---|---|---|---|
| Sabdariffa radiata | — | — | Sabdariffa radiata | — | ||
| Sabicea ceylanica | — | — | Sabicea ceylanica | — | ||
| Sacred Garlic Pear | — | — | Crateva adansonii | LC | — | |
| Sacred Lotus | නෙළුම් | தாமரை | Nelumbo nucifera | — | ||
| Saga Tree | මදටිය | மஞ்சாடி | Adenanthera pavonina | LC | — | |
| Sal-Leaved Desmodium | — | மூவிலை | Pleurolobus gangeticus | — | ||
| Salacia chinensis | — | — | Salacia chinensis | LC | — | |
| Salacia oblonga | — | — | Salacia oblonga | VU | — | |
| Salacia reticulata | කොතලහිඹුටු | — | Salacia reticulata | — | ||
| Salamander-Tree | කරවල කැබිල්ල | கொரந்தி | Antidesma bunius | LC | — | |
| Salicornia brachiata | — | — | Salicornia brachiata | — | ||
| Samandua | — | — | Clausena anisata | LC | — | |
| Sanchezia | — | — | Sanchezia parvibracteata | — | ||
| Sandpaper Tree | — | — | Ficus exasperata | LC | — | |
| Sandpaper Vine | — | — | Tetracera sarmentosa | — | ||
| Santa Maria Feverfew | — | காங்கிரஸ் களை | Parthenium hysterophorus | LC | — | |
| Santol | — | — | Sandoricum koetjape | LC | — | |
| Sapodilla | සැපදිල්ලා | — | Manilkara zapota | LC | — | |
| Sappanwood | — | பதிமுகம் | Biancaea sappan | LC | — | |
| Satinleaf | — | செம்படி | Chrysophyllum oliviforme | LC | — | |
| Sausage Tree | — | — | Kigelia africana | LC | — | |
| Scarlet Clock Vine | — | — | Thunbergia coccinea | — | ||
| Scarlet Creeper | — | — | Ipomoea hederifolia | — | ||
| Scarlet Sage | — | — | Salvia splendens | — | ||
| Schoenorchis tortifolia | — | — | Schoenorchis tortifolia | — | ||
| Schumacheria alnifolia | — | — | Schumacheria alnifolia | CR | Endemic | |
| Scolopia pusilla | — | — | Scolopia pusilla | — | ||
| Scrambling Clerodendrum | — | — | Volkameria inermis | — | ||
| Scutellaria violacea | — | — | Scutellaria violacea | — | ||
| Sea Almond | කොට්ටම්බා | — | Terminalia catappa | LC | — | |
| Sea Daisy | — | — | Wollastonia biflora | — | ||
| Sea Grape | — | — | Coccoloba uvifera | LC | — | |
| Sea Hibiscus | — | — | Hibiscus tiliaceus | LC | — | |
| Sea Purslane | — | கடல் வழுக்கைக்கீரை | Sesuvium portulacastrum | LC | — | |
| Seed-Under-Leaf | — | — | Phyllanthus virgatus | — | ||
| Seedbox | — | — | Ludwigia hyssopifolia | LC | — | |
| Semecarpus coriaceus | — | — | Semecarpus coriaceus | EN | Endemic | |
| Semecarpus marginatus | — | — | Semecarpus marginatus | VU | — | |
| Semecarpus nigroviridis | — | — | Semecarpus nigroviridis | VU | — | |
| Semecarpus subpeltatus | — | — | Semecarpus subpeltatus | VU | Endemic | |
| Semi-Pinnated Brake | — | — | Pteris semipinnata | — | ||
| Senecio gardneri | — | — | Senecio gardneri | — | ||
| Senecio ludens | — | — | Senecio ludens | — | ||
| Senecio zeylanicus | — | — | Senecio zeylanicus | — | ||
| Senegalia caesia | — | — | Senegalia caesia | LC | — | |
| Senna bacillaris | — | — | Senna bacillaris | LC | — | |
| Senna fruticosa | — | — | Senna fruticosa | LC | — | |
| Senna macranthera | — | — | Senna macranthera | LC | — |
