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Family Asteraceae
Sambong-gala
Pterocaulon redolens (Forst. f.) F.-Vill.
WING STEM GRASS
Yi jing cao

Scientific names Common names
Pterocaulon redolens (Forst. f.) F.-Vill. Sambong-gala (Tag.)
Pterocaulon cylindrostachyum CB Clarke Subusob (Ilk.)
Conyza redolens Willd. Subusob-a-balang (Ilk.)
Gnaphalium cylindrostachyum Wall. Wing stem grass (Engl.)
Gnaphalium redolens Forst. f.  
Monenteles redolens DC.  
Sphaeranthus elongatus Blanco  
Tessaria redolens Less.  
Yi jing cao (Chin.)  
Sambong-gala is a local name shared by botobotonisan and sambong-gala (Pterocaulon redolens).


Botany
Sambong-gala is a wooly, erect, branched herb, 0.5 to 1 meter in height, with stems bearing very conspicuous longitudinal wngs. Leaves are alternate, stalkless, lanceolate, 3 to 7 centimeters long, and toothed at the margins. Heads are small and borne in large numbers on the upper parts of the branches. Flowers are pink to purplish.

Distribution
- In open waste places at low and medium altitudes in Lepanto and the Benguet Subprovincers, Cagayan, Ilocos Norte, Pangasinan, Bataan, and Batangas Provinces in Luzon, and in Mindoro.
- Occurs in Burma to New Caledonia and Australia.

Constituents
- Study of aerial parts yielded seven coumarins (5-methoxy-6,7-methylenedioxycoumarin, ayapin, puberulin, 5-methoxyscopoletin, 2',3'-dihydroxypuberulin, isofraxidin, and 5-(2',3'-dihydroxy-3'-methylbutyloxy)-6,7-methylenedioxycoumarin) and three flavonoids (luteolin, tomentin, and chrysosplenol C).

Parts used
Leaves

Uses

Folkloric
Decoction of leaves used for stimulant baths.

Studies
Phytochemicals / Anti-Mycobacterial / Cytotoxicity:
Studies on the chemical constituents of the aerial parts of Pterocaulon redolens isolated ten components: seven coumarins and three flavonoids. (See above: Constituents) Six coumarins and one flavonoid displayed mild activity against Mycobacterium tuberculosis. One flavonoid possessed moderate cytotoxicity against breast cancer and human small cell lung cancerr cell lines.

Availability
Wild-crafted.

Last Updated October 2012

IMAGE SOURCE: / Line drawing / Pterocaulon redolens (Willd.) F.-Vill. / © Collected by www.plant.ac.cn / ZHIWUTONG / CLICK ON IMAGE TO GO TO SOURCE PAGE

Additional Sources and Suggested Readings
(1)
CHEMICAL CONSTITUENTS OF PTEROCAULON REDOLENS / KANLAYAVATTANAKUL M, RUANGRUNGSI N et al / Heterocycles, VOL.61;NO.;PAGE.183-187(2003)
(2)
Pterocaulon redolens (Willd.) Fern. - Vill. / Catalogue of Life, China


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