Indian screw tree
Helicteres isora
- Names in the book
- Indian Screw Tree, Eng. The book records no Philippine name for this plant.
- Names from other sources
- None found. PROSEA gives names from neighbouring countries but none from the Philippines.
- Colours
- flowerred, orange
- Native range
- South Asia to northern Australia
- In the Philippines, per the book
- Luzon, Panay.
- Family
- Malvaceae, filed in the book under Sterculiaceæ
- Printed as
- Helicteres Isora, L. (H. chrysocalyx, Miq.; H. Roxburghii, G. Don.)
- Sources
- Page 54 on Project Gutenberg · Wikipedia
The plant today
Helicteres isora, sometimes called the Indian screw tree, is a small tree or large shrub found in southern Asia and northern Oceania. It is usually assigned to the family Malvaceae, but it is sometimes assigned to the family Sterculiaceae. The red flowers are pollinated mainly by sunbirds, butterflies, and Hymenoptera. In the 19th century fibers from the bark were used to make rope and sacks, although nowadays the tree is harvested for the fruits and roots which are used in folk medicine.
Excerpt from “Helicteres isora” on Wikipedia, CC BY-SA 4.0.
Recorded in the Philippines
GBIF holds no records of this plant from the Philippines.
Checked against GBIF occurrence records, October 2026.
What the 1901 book says
A historical record, quoted as printed. Doses and remedies here are not medical advice.
Uses
I am ignorant of the use that the Filipinos make of this plant, though it is very possible that they do not employ it at all in medicine, which is usually the case with those plants to which they have given no name. In India the peculiar spiral form of the fruit has suggested its application, according to the theories of the doctrine of symbolism. Ainslie says that the Hindoos use it to treat diseases of the external auditory canal. On account of its emollient properties and probably on account of its twisted form, it is used internally as a decoction, in flatulence and the intestinal colic of children. It is indispensable in the marriage ceremonies of the caste of Vaisya, among whom it is customary for the groom to wear on his wrists in the form of bracelets, strings of this fruit combined with that of Randia dumetorum.
The root yields a juice which is employed in skin diseases, in abscess, acid in cardialgia. In Jamaica the juice of the leaves is sometimes used for constipation.
Botanical description
A small tree with leaves alternate, simple, entire, irregularly nerved or veined at the base, petiolate. Flowers of a handsome red color, hermaphrodite, regular, axillary. Calyx gamosepalous, tubular, of 5 parts. Corolla, 5 free petals slightly dentate at the point. Stamens numerous, united on a free column on the cusp. Compound nectary of 5 unilocular, many-ovuled ovaries. Styles 5, joined at the base. Fruit of 5 carpels, thin, twisted on themselves in spirals, forming a cone, pubescent, of a greenish-brown color, each containing a single row of angular seeds.
Recent research
The most cited papers since 2022 that name this plant in the title, pulled from Europe PMC in October 2026. Titles are the authors' own and the findings have not been reviewed here.
- Anti-angiogenic potential of bioactive phytochemicals from Helicteres isora targeting VEGFR-2 to fight cancer through molecular docking and molecular dynamics simulation
- Role of diosgenin extracted from Helicteres isora L in suppression of HIV-1 replication: An in vitro preclinical study
- Targeting Colorectal Cancer With Helicteres isora L.: Integrative Approach Combining Network Pharmacology, Molecular Docking, Molecular Dynamics Simulations, and In Vitro Validation