Saraca is a genus of flowering trees in the family Fabaceae (legume family), placed within the order Fabales. The genus comprises roughly 20 accepted species distributed across tropical and subtropical Asia, from India and Sri Lanka east through Indochina, southern China, the Malay Archipelago (Malesia), and into New Guinea.
The trees are recognised by their distinctive inflorescences: densely clustered, upward-pointing flowers that open in shades of yellow, orange, and red. Unusually for flowering plants, the flowers lack petals entirely — the colour comes from brightly coloured sepals — and bear prominent stamens that can project up to 20 cm. Leaves are pinnate, composed of paired leaflets, and the canopy is typically shade-tolerant, reflecting the genus's natural understorey habitat beneath taller forest trees. Most species are closely associated with streamside or waterlogged environments.
The best-known member is Saraca asoca, the ashoka tree, which holds deep significance in Hinduism and Buddhism — tradition holds that the Buddha was born beneath one. Saraca indica is widely cultivated as an ornamental street and garden tree across tropical Asia. Saraca thaipingensis, the yellow saraca, is valued for its pendant young leaves in bronze and pink before they harden to green. The genus can be grown outdoors in consistently warm, humid climates and thrives in moist, well-drained soil rich in organic matter; it is also cultivated in tropical glasshouses elsewhere.
Distribution
Saraca is native to tropical and subtropical Asia, ranging from India and Sri Lanka through Indochina and southern China, across Malesia, and into New Guinea. Most species favour moist, shaded habitats and are commonly found near bodies of water such as streams and riverbanks.
Ecology
Saraca species are characteristically understorey or semi-understorey trees adapted to shade and high moisture. Most species are associated with particular bodies of water — streams, riverbanks, or seasonally waterlogged ground — within tropical rainforest and monsoon forest across their range.
Cultural Uses
Saraca asoca (the ashoka tree) holds profound religious and cultural importance across South and Southeast Asia. In Buddhist tradition it is regarded as the tree under which the Buddha was born, and it is venerated at pilgrimage sites throughout the region. In Hinduism the tree is sacred and commonly planted near temples. Red saraca (Saraca sp.) is the official provincial tree of Yala Province, Thailand.
