Trees & flowers
1,960 species| Photo | English | සිංහල | தமிழ் | Scientific name | IUCN | Endemic |
|---|---|---|---|---|---|---|
| Algarrobilla | — | ஞாழல் | Senna sophera | LC | — | |
| Alkali Heliotrope | — | — | Heliotropium curassavicum | LC | — | |
| Alphonsea lutea | — | — | Alphonsea lutea | LC | — | |
| Alsophila hookeri | — | — | Alsophila hookeri | Endemic | ||
| Alsophila sinuata | — | — | Alsophila sinuata | — | ||
| Alsophila walkerae | — | — | Alsophila walkerae | Endemic | ||
| Aluminium Plant | — | — | Pilea cadierei | — | ||
| Amberella | — | — | Spondias pinnata | LC | — | |
| American Black Nightshade | — | — | Solanum americanum | LC | — | |
| Ammannia octandra | — | — | Ammannia octandra | LC | — | |
| Anamirta cocculus | — | — | Anamirta cocculus | — | ||
| Anaphalis brevifolia | — | — | Anaphalis brevifolia | — | ||
| Anaphalis marcescens | — | — | Anaphalis marcescens | — | ||
| Anaphalis subdecurrens | — | — | Anaphalis subdecurrens | — | ||
| Andrographis alata | — | — | Andrographis alata | — | ||
| Angel’s Trumpet | — | — | Brugmansia arborea | EW | — | |
| Angraecum zeylanicum | — | — | Angraecum zeylanicum | — | ||
| Aniseia martinicensis | — | — | Aniseia martinicensis | LC | — | |
| Anisophyllea cinnamomoides | — | — | Anisophyllea cinnamomoides | VU | Endemic | |
| Anodendron parviflorum | — | — | Anodendron parviflorum | — | ||
| Anoectochilus regalis | — | — | Anoectochilus regalis | Endemic | ||
| Anoectochilus setaceus | — | — | Anoectochilus setaceus | — | ||
| Anthoshorea stipularis | — | — | Anthoshorea stipularis | VU | Endemic | |
| Antidesma alexiteria | — | — | Antidesma alexiteria | — | ||
| Antidesma ghaesembilla | — | — | Antidesma ghaesembilla | LC | — | |
| Antidesma pyrifolium | — | — | Antidesma pyrifolium | VU | Endemic | |
| Antique Spurge | — | சதுரக்கள்ளி | Euphorbia antiquorum | LC | — | |
| Aphyllodium biarticulatum | — | — | Aphyllodium biarticulatum | — | ||
| Aphyllorchis montana | — | — | Aphyllorchis montana | — | ||
| Aporosa lanceolata | — | — | Aporosa lanceolata | VU | Endemic | |
| Apple Mangrove | — | கிண்ணை | Sonneratia caseolaris | LC | — | |
| Apple Mangrove | — | — | Sonneratia alba | LC | — | |
| Arabian Jasmine | — | இருள்நாறி | Jasminum sambac | — | ||
| Arabian Jointed Glasswort | — | — | Suaeda vermiculata | — | ||
| Aralia leschenaultii | — | — | Aralia leschenaultii | LC | — | |
| Archidendron bigeminum | — | — | Archidendron bigeminum | VU | — | |
| Arctic Snow | ඉද්ද | — | Wrightia antidysenterica | — | ||
| Ardisia gardneri | — | — | Ardisia gardneri | Endemic | ||
| Ardisia lankaensis | — | — | Ardisia lankaensis | — | ||
| Ardisia missionis | — | — | Ardisia missionis | — | ||
| Ardisia solanacea | — | கோழுருச்சி | Ardisia solanacea | LC | — | |
| Ardisia zeylanica | — | — | Ardisia zeylanica | — | ||
| Argyreia thwaitesii | — | — | Argyreia thwaitesii | — | ||
| Aristolochia ringens | — | — | Aristolochia ringens | — | ||
| Arjun Tree | කුඹුක් | மருதமரம் | Terminalia arjuna | LC | — | |
| Aroma | — | — | Dichrostachys cinerea | LC | — | |
| Arrow-Leafed Morning Glory | — | — | Ipomoea sagittifolia | — | ||
| Arrowhead Rattlebox | — | — | Crotalaria sagittalis | — |
