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Anogeissus latifolia - Dhava

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Dhava, Anogeissus latifolia

Dhava is a small to medium-sized, deciduous tree growing up to 20 metres, occasionally to 35 metres, tall. The bole can be unbranched for up to 15 metres. The tree is often harvested for its gum and tannins. It also yields a good quality wood and is planted in soil stabilization programmes.

Uses

Wound healing, {{Uses|Skin diseases}, Diabetes, Anaemia, Hemorrhoids [1]

Parts Used

Bark, Gum, Heartwood

Chemical Composition

The leaves, bark and heartwood yield quinic and shikmik acids; leaves contain gallotannin (90–95% of the tannins). The young leaves and shoots contain 50% tannins (dry basis). The bark contains 12–18% tannins. Heartwood contains gallic acid, ellagic acid, its derivatives, quercetin andmyricetin. The gum is mainly the calcium salt of a complex, high molecular weight polysaccharic acid (ghattic acid) [2]

Common names

Language Common name
Kannada dhinduga, dindaga, dindlu
Hindi dhau, dhawda, dohu
Malayalam malakanniram, vellanaga
Tamil vellai-nagai, ekariyamaram, vellainakam
Telugu chirumaanu, sirimaanu, thirumaanu
Marathi NA
Gujarathi NA
Punjabi NA
Kashmiri NA
Sanskrit dhava, dridhataru, madhuratvacha, nanditaru, pishachavriksha, shushkanga
English Dhawa

, [3]

Properties

Reference: Dravya - Substance, Rasa - Taste, Guna - Qualities, Veerya - Potency, Vipaka - Post-digesion effect, Karma - Pharmacological activity, Prabhava - Therepeutics.

Dravya

Rasa

Kashaya (Astringent)

Guna

Laghu (Light), Rooksha (Dry)

Veerya

Sheeta (cold)

Vipaka

Katu (Pungent)

Karma

Pitta, Kapha

Prabhava

Habit

Tree

Identification

Leaf

Kind Shape Feature
Simple Opposite or sometimes alternate estipulate; petiole 5-15 mm, slender, grooved above, glabrous; lamina 2.5-18 x 1.7-9 cm, elliptic, elliptic-oblong, suborbicular, or oblong-obovate, base obtuse, round, cuneate or acute, apex obtuse, emarginate or mucronate, margin entire, glabrous, subcoriaceous; lateral nerves 4-11 paired, pinnate, prominent beneath, arched towards the margin, intercostae scalariform, prominent.

[4]

Flower

Type Size Color and composition Stamen More information
Bisexual axillary globose heads Pale yellow 10 peduncle puberulous; pedicel reduced or absent; calyx tube 2 winged, 3-5.5 mm long, produced above the ovary, villous inside, teeth 5, ovate-triangular, to 1 mm long; stamens 10, in 2 series, exserted, 1.5-3 mm long; anthers small; ovary inferior, 1-celled, densely tomentose; ovules 2, pendulous; style 2-3 mm long, thickened at base, villous; stigma simple.

Fruit

Type Size Mass Appearance Seeds More information
A drupe 6 - 8 mm across greenish-yellow, compressed, puberulous, circular; wings 2, margin entire or slightly undulate, beaked; seed one, obovate. {{{6}}}

Other features

List of Ayurvedic medicine in which the herb is used

[5]

Where to get the saplings

Mode of Propagation

Seeds, Cuttings.

How to plant/cultivate

Fruits should be collected only when they are fully ripe as immature seeds fail to germinate. The ripe fruits are collected from the trees, dried in the sun and then stored. Generally seed viability is low but increases after very dry seasons. Seed germination is increased by a 3-min hot water seed treatment. Seed storage in metal tins or polythene containers is the best. There are 105 000-125 000 seeds /kg. [6]

Commonly seen growing in areas

Tropical area

Photo Gallery

References

External Links