Lannea coromandelica, commonly known as the Indian ash tree or wodier in parts of South Asia, is a deciduous tree native to tropical Asia and widely distributed across Sri Lanka. Recognised within the island's catalog of ayurvedic medicinal plants, it has been used in traditional healing for centuries and continues to hold a respected place in Sri Lankan ethnobotany.
What is Lannea coromandelica?
Belonging to the family Anacardiaceae — the same family as mangoes and cashews — Lannea coromandelica is a medium to large deciduous tree that typically sheds its leaves during the dry season. Its bark is grey-brown and slightly fissured, and the tree produces small yellowish-green flowers before the leaves return. The fruit is a small, fleshy drupe that turns reddish when ripe and is eaten by birds and other wildlife.
In Sri Lanka, the tree is found across the dry and intermediate zones, often growing in scrub forests, along roadsides, and on the edges of agricultural land. It is notably common in and around the ancient city of Polonnaruwa, where dry-zone flora dominates the landscape.
What are the traditional medicinal uses of Lannea coromandelica?
In Ayurveda, Lannea coromandelica is valued primarily for its bark, leaves, and resin. The bark is astringent and has long been used in preparations aimed at treating wounds, ulcers, and inflammatory conditions of the skin. A decoction of the bark is traditionally applied topically to promote wound healing and reduce swelling.
- Wound healing: Bark decoctions and pastes are applied to cuts, abrasions, and slow-healing ulcers.
- Anti-inflammatory use: Bark preparations are used to address joint pain and localised inflammation in traditional practice.
- Oral health: Twigs have historically been used as tooth-cleaning sticks in rural communities across South Asia.
- Dysentery and diarrhoea: The astringent properties of the bark make it a component in formulations addressing gastrointestinal complaints.
- Fever management: Leaf and bark extracts appear in some traditional formulations used to manage febrile conditions.
These applications align with the broader principles of Ayurvedic medicine, which draws heavily on the astringent (kashaya) and cooling properties of plant-derived remedies. Sri Lanka's ayurvedic tradition shares roots with the Indian classical system while incorporating uniquely local plant knowledge developed over millennia.
What do modern researchers say about its medicinal properties?
Contemporary phytochemical studies have identified a range of bioactive compounds in Lannea coromandelica, including tannins, flavonoids, and phenolic acids — constituents that are consistent with its traditional reputation as an astringent and anti-inflammatory agent. Laboratory research has investigated its potential antimicrobial, antioxidant, and wound-healing activities, with several studies reporting results that broadly support traditional uses.
It is important to note, however, that most published research remains at the preliminary laboratory stage. Clinical trials in humans are limited, and the tree's preparations should not be used as a substitute for professional medical treatment. Practitioners of Ayurveda in Sri Lanka typically integrate such plants into holistic treatment protocols overseen by qualified physicians (vaidyas).
How does Lannea coromandelica fit into Sri Lanka's broader herbal tradition?
Sri Lanka maintains one of the most biodiverse floras in Asia relative to its land area, and its ayurvedic pharmacopoeia reflects this richness. Lannea coromandelica sits alongside hundreds of other species catalogued and used by traditional healers across the island. Plants such as Pongamia pinnata and Acacia chundra share similar ecological habitats and overlap in some of their traditional applications, illustrating the layered complexity of Sri Lanka's herbal heritage.
The country's Department of Ayurveda, under the Ministry of Health, actively documents and regulates ayurvedic practice, ensuring that medicinal plants are used within a framework that respects both traditional knowledge and contemporary safety standards. Efforts to protect the habitats where such trees naturally occur — including dry-zone forests and protected areas like Wilpattu National Park — are therefore directly relevant to preserving this living pharmacopoeia.
What does Lannea coromandelica look like in the wild?
Lannea coromandelica is a distinctive presence in the dry-zone landscape. Mature trees can reach heights of around 15 to 20 metres under favourable conditions, with a spreading crown that provides welcome shade during the dry season. The pinnate leaves, composed of several pairs of leaflets, emerge fresh and green at the start of the wet season, giving the tree a brief but vivid flush of colour.
The tree is often seen growing near temples, ancient ruins, and in village home gardens, reflecting a long history of cultivation alongside human settlements. Its relatively fast growth rate and tolerance of poor, rocky soils make it a practical species for agroforestry and land restoration in drier parts of the island.
Is Lannea coromandelica used outside Sri Lanka?
Yes. The species is distributed across South and Southeast Asia, including India, Bangladesh, Myanmar, and parts of continental Southeast Asia. In India, it is recorded in Ayurvedic and Unani medical traditions under names such as jhingan or mohin, with comparable uses around wound healing and anti-inflammatory preparations. In parts of Africa, related Lannea species are used in traditional medicine, though L. coromandelica itself is primarily an Asian species.
This cross-regional relevance underscores the tree's significance as a subject of ethnobotanical study, and ongoing research in multiple countries continues to build the evidence base around its pharmacological potential.
How is Lannea coromandelica catalogued in Sri Lanka?
Within Lakpura's reference catalog of Sri Lankan ayurvedic plants, Lannea coromandelica is registered under the identifier LK94006944. This cataloguing effort is part of a broader documentation initiative that supports awareness of Sri Lanka's medicinal plant heritage among travellers, researchers, and practitioners interested in traditional wellness systems. Sri Lanka's rich botanical diversity — spanning rainforests like the Sinharaja Forest Reserve to the dry plains of the north — means that encounters with such species are possible across many different travel itineraries.
