Question 1

What is Guettarda speciosa used for in ayurvedic medicine?

Accepted Answer

In Sri Lankan Ayurveda, the bark, leaves, and roots of Guettarda speciosa have traditionally been used in preparations for inflammation, skin conditions, and rheumatic complaints. Bark decoctions have been applied externally and leaf preparations used in wound care. Traditional use should always be guided by a qualified ayurvedic practitioner.

Question 2

Where is Guettarda speciosa found in Sri Lanka?

Accepted Answer

The tree grows primarily along Sri Lanka's coastal zones, favouring sandy shores, lagoon margins, and beach-scrub habitats. It is most commonly found along the northwestern and southern coastlines in low-country dry and intermediate zones. It does not typically occur in highland or interior forest areas.

Question 3

What family does Guettarda speciosa belong to?

Accepted Answer

Guettarda speciosa belongs to the family Rubiaceae, a large and botanically significant family that also includes coffee, gardenia, and many other tropical species. Within this family, the genus Guettarda includes around 50 species distributed across tropical regions worldwide.

Question 4

How do Guettarda speciosa seeds disperse?

Accepted Answer

The tree produces corky, buoyant drupes that float on seawater, allowing seeds to travel long distances on ocean currents. This oceanic dispersal mechanism explains why the species has a pantropical distribution stretching from East Africa to Polynesia. Seeds are often found washed up on beaches near parent trees.

Question 5

Is Guettarda speciosa rare or endangered?

Accepted Answer

Guettarda speciosa is not currently considered a globally threatened species, given its wide pantropical distribution. However, like many coastal plants in Sri Lanka, localised populations can face pressure from coastal development, sand mining, and habitat degradation. Protecting coastal vegetation communities helps preserve this and many associated species.

Question 6

What does the Guettarda speciosa flower look like and when does it bloom?

Accepted Answer

The flowers are tubular, white to cream in colour, and arranged in small clusters. They release a noticeable sweet fragrance after dusk, which attracts night-flying moth pollinators. Flowering typically occurs during warmer months, though exact timing can vary with local conditions.

Question 7

Where can I learn about Sri Lankan medicinal plants as a tourist?

Accepted Answer

The Royal Botanic Gardens at Peradeniya near Kandy is one of the best places to encounter labelled collections of Sri Lanka's medicinal flora. Guided nature walks in reserves like Sinharaja also offer encounters with many documented herbal species. Ayurvedic wellness centres and retreat resorts across the island provide introductory consultations and plant tours.