Myanmar name: Payan-nawa
English names: Hogweed, Pigweed
Family: Nyctaginaceae
Burmese-Myanmar name in Nagathein :2-186
{pa.ran°-na.wa}
Photos:
left -- habit
right -- flowers and fruits
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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
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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
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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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