Update: 2006-03-18 06:11 PM +0700


Medicinal Plants of Myanmar


by Kyaw Soe and Tin Myo Ngwč, Forest Resource Environment Development and Conservation Association (FREDA), Series 1, 2004, ISBN 974-91986-0-3
Copied by U Kyaw Tun, and staff of TIL for staff and students of TIL. Not for sale.

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UKT: Nagathein references are given to check the Burmese-Myanmar names. * shows where there is no agreement in Burmese name but when the plant is identifiable from botanical name.

{pa.ran°-na.wa} Boerhaavia diffusa L.

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KS-TMN 170

{pa.ran°-na.wa} Boerhaavia diffusa L.2-186

Botanical name: Boerhaavia diffusa L. Sp. Pl. 3. 1753.
Myanmar name: Payan-nawa
English names: Hogweed, Pigweed
Family: Nyctaginaceae

Burmese-Myanmar name in Nagathein :2-186


left -- habit

right -- flowers and fruits
Click on the pictures to enlarge.

Identification characters:
Perennial herbs, stems terete, tumid at the nodes, decumbent or procumbent, diffusely branched, branches spreading, glabrescent. Leaves opposite, the opposite pair unequal at each node, simple; exstipulate; petiolate; laminae broadly ovate or suborbicular, the bases rounded or subcordate, the margins entire, obscurely undulate, the tips acute or obtuse, unicostate, reticulate, the upper surfaces puberulent, the lower glabrous, silvery white. Inflorescences in axillary umbelloid cymes, the cymules fasicled at the terminal ends, the cymule 1- to 3-flowered; peduncles pubescent; bracts ovate-lanceolate, scarious, deciduous. Flower bracteolate, the bracteoles ovate-lanceolate, pedicellate, bisexual, actinomorphic, hypogynous. Perianth uniseriate, composed of a petaloid calyx, synsepalous, 5-lobed, constricted pink, the tubes below the constriction ovoid, 5-ribbed, densely covered withe many globose viscide glandular hairs, fewer on the ridges, persistent. Androecium polyandrous, stamens 2-3, slightly exserted, the filaments basally connate forming a staminal cup, purplish, the anthers dithecous, globose, dorsifixed, dehiscence longitudinal. Pistil 1, ovary globose, 1-carpelled, 1-loculed, the ovule solitary and basal, the style inserted, purple, the stigma capitate, purple. Fruit an achene, obscurely obovoid, glabrous, the persistent calyx 5-ribbed, globose viscid glandular hairs dense in furrows; seed obscurely obovoid, glabrous, endospermic.

Flowering period: October-December
Fruiting period: December-April

Distribution: Grows wild throughout Myanmar, especially at the sandy beaches of streams.

Parts used and uses: Whole plant -- Diarrhoea; Heart disease; Carminative; Expectorant; Haemorrhoid; Cough; Inflammations; Oedema; Antidote for poisons; Gynaecological disease. Root powder -- Asthma; Unproductive cough; To allay thirst; Ascites; Intermittent fever; Gynaecological disease; Ringworm; Antidote for scorpion venom. Leaf -- Dysuria.

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