Compilation of herbal plants (description, geographical distribution, taxonomy, line drawings), biodiversity and herbarium.

Read More
Research & Publication

Description of herbal and T&CM research, searchable publication and process from medicinal plant discovery to clinical trial in producing a high-quality registered herbal drug.

Read More
Traditional & Complementary Medicine (T&CM)


Definition and description of therapies, policy, training and education, research in the practise of (T&CM) and integrated medicine system.           

Read More


News Update

Announcement & Advertisement

Forthcoming Events

International Conference on Traditional Medicine and Phytochemistry 2021

From Mon, 12. July 2021 Until Wed, 14. July 2021

Asian Symposium on Medicinal Plants and Spices XVII (2020)

From Tue, 17. August 2021 Until Thu, 19. August 2021

Cassia fistula L.

Cassia fistula L.





Vernacular Names


Bereksa, tengguli, rajah kayu.


Golden shower, Indian laburnum.


Trengguli (Javanese), bobondelan (Sundanese), klobop (Madurese).


Fistula (Tagalog, Cebu Bisaya), kana-pistula (Tagalog), bitsula (Cebu Bisaya).


Reach, reach speu, reach chhpoeus.


Khoun (General).


Khuun (Central, Northern), lom laeng (Northern), ratchaphruek (Central).


C[aa]y b[of] c[aj]p n[uw][ows]c, mu[oof]ng ho[af]ng y[ees]n.



Geographical Distributions

Cassia fistula is widespread in the tropics; often cultivated as an ornament in Java, planted as a medicinal or ornamental plant in the Philippines, and cultivated throughout New Guinea.


Cassia fistula is a small to medium-sized tree, measures 10-15 m tall or sometimes more, deciduous or semi-deciduous. It is with spreading branches while the young twigs are smooth.

The leaves are with 3-7 pairs of leaflets, with petiole 5-8 cm long, terete, with ovate-oblong leaflets, measuring 7-12 cm x 4-8 cm, subcoriaceous, broadly wedge-shaped at base, acute at apex, with shiny upper surface and smooth when mature.

The inflorescence is an axillary, pendulous, lax raceme, measures 20-40(-60) cm long and many-flowered. The flowers are fragrant, with sepals 7-10 mm long, with broadly ovate petals and golden-yellow. There are 10 stamens where 3 of them are with filaments 3-4 cm long, while the other 4 are shorter with filaments 6-10 mm long and the last 3 are reduced with filaments 3-4 mm long . The anthers are minute.

The fruit is 20-60 cm long, pendent, terete, measures 1.5-2 cm in diametre, black, hairless and indehiscent. The seeds are numerous, separated by papery septa and embedded in black glutinous pulp.

Ecology / Cultivation

Cassia fistula occurs in Java in light forests below 400 m altitude, and in the Philippines in open grasslands at low and medium altitudes. It seems to favour calcareous and red, volcanic soils, but in Thailand, it is also found on sandy and loamy soils.

Line Drawing / Photograph



  1. Plant Resources of South-East Asia No.12(1): Medicinal and poisonous plants 1.


Explore Further

Consumer Data

Consumer data including medicinal herbs, dietary supplement monographs, health condition monographs and interactions and depletions.                                    

Read More
Professional Data

Professional data organized into medicinal herbs, dietary supplement monographs, health condition monographs, T&CM herbs, formulas, health conditions, interactions and depletions.

Read More
International Data

We offer International linkages to provide extensive content pertaining to many facets of T&CM as well as Integrated Medicine. Please register for access.    

Read More