2.Vasaka
Transcript of 2.Vasaka
Vasaka Vasaka
Source Source Dried & fresh leaves of Dried & fresh leaves of
Adhatoda vasica Adhatoda vasica
Acanthaceae Acanthaceae Indigenous to IndiaIndigenous to India Requires loamy soil Requires loamy soil Raised from stem cuttings / seedsRaised from stem cuttings / seeds Also obtained from wild sources / Also obtained from wild sources /
garden plantsgarden plants
Description Description
Shape Shape lanceolate , lanceolate , broadbroad at base at base ApexApex acuminate acuminate Petiolate Petiolate Margin Margin entire entire Colour Colour dull brownish greendull brownish green Slight odourSlight odour Taste Taste bitter bitter
Microscopy Microscopy (dorsiventral leaf)(dorsiventral leaf)LaminaLamina
Upper epidermis Upper epidermis Single layered , Cuticularised Single layered , Cuticularised Covering trichomes Covering trichomes 2 – 4 celled2 – 4 celled
thick walled , pointedthick walled , pointedGlandular trichomes Glandular trichomes 4 celled heads4 celled headsDiacytic stamataDiacytic stamata
Lower epidermisLower epidermis More Stomata & Trichomes More Stomata & Trichomes than the upper than the upper
MesophyllMesophyllUpper palisade Upper palisade Double layeredDouble layered
Lower spongy parenchyma Lower spongy parenchyma 2 – 6 layered 2 – 6 layered CystolithsCystolithsVascular bundles (V.B) Vascular bundles (V.B) CollateralCollateral
Midrib Midrib Epidermis Epidermis Both upper & lower epidermisBoth upper & lower epidermis
More trichomes in midrib regionMore trichomes in midrib region Collenchyma Collenchyma 2 – 4 layered 2 – 4 layered
Below upper & above lower epidermisBelow upper & above lower epidermis
Remaining parenchymaRemaining parenchyma V.B V.B CollateralCollateral
Xylem towards upper epidermis Xylem towards upper epidermis
Phloem towards lower epidermisPhloem towards lower epidermis
ConstituentsConstituents Alkaloids Alkaloids Vasicine , Vasicinone Vasicine , Vasicinone Volatile oil Volatile oil Others Others Betain , Vasakin , Betain , Vasakin ,
Adhatodic acidAdhatodic acid
Uses Uses
Expectorant Expectorant Exert bronchodilator effect Exert bronchodilator effect