Question 1

What is Pisonia grandis used for in ayurveda?

Accepted Answer

In Sri Lanka's ayurvedic tradition, Pisonia grandis is used in remedies targeting inflammatory conditions, skin disorders, and rheumatic complaints. Leaves and bark are the most commonly utilised parts, applied in poultices or compound herbal formulations. Use should always be guided by a qualified ayurvedic practitioner.

Question 2

Is Pisonia grandis native to Sri Lanka?

Accepted Answer

Pisonia grandis is distributed across the Indo-Pacific region, including Sri Lanka, the Maldives, and various Indian Ocean island groups. In Sri Lanka it grows naturally in coastal lowland areas and is also cultivated in gardens and ayurvedic centres. It is considered part of the island's traditional botanical and medicinal heritage.

Question 3

What does Pisonia grandis look like?

Accepted Answer

Pisonia grandis is a large, spreading tropical tree with very broad, soft, pale-green leaves that are its most recognisable feature. The canopy is open and somewhat spreading. Its fruit clusters are slender and cylindrical, turning sticky at maturity — an adaptation that helps disperse seeds via birds.

Question 4

Which family does Pisonia grandis belong to?

Accepted Answer

Pisonia grandis belongs to the plant family Nyctaginaceae, which also includes the ornamental bougainvillea. Within this family, the genus Pisonia comprises tropical trees and shrubs found across equatorial regions.

Question 5

Are there scientific studies on Pisonia grandis medicinal properties?

Accepted Answer

Yes, published research has investigated Pisonia grandis for antimicrobial, anti-inflammatory, and antioxidant properties. Phytochemical studies have confirmed the presence of alkaloids and flavonoids in the plant's tissues. Most findings come from laboratory or preclinical studies, and large-scale clinical trials are still limited.

Question 6

Where can I see medicinal plants like Pisonia grandis in Sri Lanka?

Accepted Answer

Ayurvedic herbal gardens attached to treatment centres and hospitals across Sri Lanka often maintain specimens of traditional medicinal plants including Pisonia grandis. Some botanical gardens and eco-tourism sites in the lowland wet zone also include labelled medicinal plant collections.

Question 7

How does Pisonia grandis disperse its seeds?

Accepted Answer

The fruit of Pisonia grandis produces a sticky secretion at maturity that adheres to feathers and fur, allowing seeds to be carried by animals — including seabirds — across considerable distances. This trait has made it a subject of ecological study in island biogeography, particularly in the Indian Ocean.