infection and skin-burn than the un treate ones.
Dosage Seed—250 mg powder; 5— 10 g for decoction.
(API, Vol. I.)

Populus alba Linn. Family Salicaceae.
Habitat Northwestern Himalaya at 1,200—3,000 m, also grown in avenues.

English White Poplar.

Folk Safedaa, Jangali Fraas.

Action Bark—antirheumatic, anti-inflammatory, antibacterial, antipyretic, diuretic, febrifuge, stimulant, antiseptic. Used for arthritis, rheumatic affections, cystitis and other urinary diseases, stomach and liver disorders, anorexia and debility.
Key
application Unopened leaf- buds externally for haemorrhoids, frostbite and sunburn. (German Commission E.)
The bark contains glycosides, salicin and populin, erisin and tannin (5—9%). Salicin, a bitter tonic and antiperiodic, is used like quinine in intermittent fever, also in rheumatism.

Populus nigra Linn. var. italica Kochne.

Family Salicaceae.

Habitat North-western Himalaya at 900—3,700 m.
English Black Lombardy Poplar.
Action Bark and balsam from leaf bud— used for cold. Bark— depurative. Leaf bud—antiseptic, anti-inflammatory.

Portulaca quadrifida Linn. 513

The bud exudate contains dimethylcaffeic acid, which was found active against herpes simplex virus type 1.
A 50% ethanol extract of a mixture of flowers and buds showed 11% inhibition of enzymatic conversion of testosterone into 5 alpha-dthydrotesterone and 4-androstene-3, 17-dione. The extract was partitioned between ethylacetate and water and the resultant ethylacetate fraction contained the active compounds, pinobanksin, demethylquercetin and pinocembrin. It exhibited 15% inhibitory activity on the enzyme. Pinocembrin was the most potent, almost equal to estradiol, which was used as a control.
The bark of all
Populus species contains, phenolic glycosides, salicin and populin (salicin benzoate). Tannins are also present (5—9%).
Both salicin and populin cause elimination of uric acid. Salicin is antiperiodic and is used like quinine in intermittent fever, also in coryza, rheumatism and neuralgia.
Portulaca oleracea Linn. Family Portulacaceae.

Encyclopedia of Ayurvedic Medicinal Plants

A Candle of Medicinal Herb’s Identification and Usage