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

4th International Conference on Natural Products and Medicinal Plants Research

From Fri, 25. September 2020 Until Sat, 26. September 2020

15th International Conference on Frontiers in Alternative & Traditional Medicine

From Fri, 25. September 2020 Until Sat, 26. September 2020

International Congress on Drug Delivery

From Mon, 5. October 2020 Until Tue, 6. October 2020

Global Pharmaceutical and Pharma Industry Conference

From Mon, 12. October 2020 Until Tue, 13. October 2020

14th International Conference on Pharmaceutics and Drug Safety

From Wed, 21. October 2020 Until Thu, 22. October 2020

Stachytarpheta jamaicensis (L.) Vahl

Stachytarpheta jamaicensis (L.) Vahl




Stachytarpheta indica auct. non (L.) Vahl.

Vernacular Names


Snake­weed (Blue, Jamaican), vervain (Bastard).


Jarong (Javanese, Sun­danese), gajihan, ngadi rengga (Javanese).


Kandikandilaan (Tagalog), bolo moros (Bi­kol), albaka (Panay Bisaya).


Mo mi scha.


Ph an nguu khieo (Central), yaa nuat sue a (Northern), yaa haang nguu (Peninsular).


Du[oo]i chu[ooj]t, h[ar]i ti[ee]n.


Queue de rat, ver­vaine.

Geographical Distributions

Stachytarpheta ja­maicensis originates from the New World tropics, and at present has a pantropical distribution.


Stachytarpheta ja­maicensis is an erect perennial herb, up to 1.2(-2) m tall which is sometimes woody at the base, often dichotomously branched from the base and spreading. The young stems are obtusely quadrangular and sparingly hairy.

The leaves are arranged opposite, simple, obovate to oblong-elliptical, measure (2-)4-9 cm x (1-)2-5 cm, wedge-shaped to wing-like decurrent at base, with apex obtuse to slightly acute, with serrate-dentate margin, hairless above but sometimes sparingly hairy below. The leaves are subses­sile to shortly-petiolate while the stipules are absent.

The inflores­cence is a spike, 15-50 cm long, solitary, cylindrical, stout and often flexuous. The rachis is up to 7 mm in diame­tre. The furrows of the half-immersed flowers are much narrower than the mature rachis. The peduncle is (0.5-)1-2.5(-3.5) cm long and hairless. The flowers are ses­sile, at first erect but later immersed in the thickened rachis. The sepal is compressed, completely embedded and about 5-7 mm long, while the petal is pale bluish, violet or purple, with a whitish spot at the throat, and saucer-shaped, with the tube about 1 cm long, slightly curved and 2-lipped. The upper lip is 2-lobed while the lower is 3-lobed. The lobes are subequal while the limb is about 8 mm wide. There are 2 fertile stamens and 2 staminodes. The ovary is superior, 2-locular with style included.

The fruit is a schizo­carp, oblong-linear, measures 3-5(-7) mm x 1.5-2 mm and is en­closed in the fruiting sepal. It splits at maturity into 2 hard mericarps where each mericarp is 1-seeded. The seed is linear and without endosperm.

Ecology / Cultivation

Stachytarpheta jamaicensis is a common weed of disturbed soils on roadsides, waste places, espe­cially in pastures but also in plantation crops throughout Asia and Oceania. The main habitat is sunny, to lightly shaded, preferably not on too heavy soils with a pronounced dry season, from sea level up to 1500 m altitude.

Line Drawing / Photograph



  1. Plant Resources of South-East Asia No.12(2): Medicinal and poisonous plants 2.

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