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Family Apocynaceae
Bayag-usa
Voacanga globosa (Blanco) Merr.

Scientific names Common names
Voacanga globosa (Blanco) Merr. Bayag usa (Tag.)

Botany
A tree reaching a height of up to 3 meters. Leaves are simple, opposite, oblong-elliptic; dark green in the upper surface and pale beneath. Flowers are creamy white and showy. Fruit comes in pairs, brownish, 3 to 5 cm in diameter. Seeds are embedded in the pulp.

Distribution
In secondary forests and thickets at lower elevations.
Sometimes ornamentally cultivated for its flowers.

Uses
Folkloric
Reported anti-tumor use.

Studies
Anti-cancer:
A study reports nine of 35 tree species tested had positive anticancer activity. Voacanga globosa was added to the list of trees with anticancer substances based on a report on actual remission and inhibition of induced cell division.
Alkaloids / Tabernaemontanine:
Further studies on the alkaloids of Voacanga globosa (Blanco) Merrill: Isolation and characterization of tabernaemontanin.
Alkaloids / Antituberculosis: Study of alkaloid from Voacanga globosa with potent antituberculosis activity.

Anticancer: Study of medicinal plants in the Philippines lists nine of 35 tree species to possess anticancer activity, including Voacanga globosa, with anticancer substances based on remission and inhibition of induced cell division.

Availability
Wildcrafted.


Additional Sources and Suggested Readings
(1)
Medicinal Uses Of Selected Fruit Trees And Woody Perennials / Saturnina Halos / University of the Philippines, National Science Research Institute, Diliman, Quezon City
(2)
Further studies on the alkaloids of Voacanga globosa (Blanco) Merrill:? Isolation and characterization of tabernaemontanine / Lleander, Glory C. / Philippine Journal of Science / 247-257 / S-D 1969
(3)
Alkaloid from Voacanga globosa with potent antituberculosis activity / Research Center for the Natural Sciences,, University of Santo Tomas and Institute of Tuberculosis Research, University of Illinois at Chicago

(4)
Medicinal Uses Of Selected Fruit Trees And Woody Perennials / Saturnina Halos / University of the Philippines, National Science Research Institute, Diliman, Quezon City / Journal of Tropical Medicinal Plants/ Volume 5 No. 2


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