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Pharmacognostical Study of Aloe barbadensis Miller
Authors: Dhiman Sonia, Kumar Ajay, Dhiman Monika, Chawla Kumar Satbir and Priyanka

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Kumari (Aloe barbadensis Miller) is non controversial plant, but three types of (Musabbar) aloe
are sold in market i.e. Barbados aloe, Socotrine aloe and Cape aloe which are prepared from
Aloe barbadensis Miller, Aloe perryi Baker and Aloe ferox Miller respectively and other
inferior aloe are also sold like Natal aloes by the name of Musabbar. These species of aloe are
difficult to identify hence pharmacignostical study of Aloe barbadensis Miller was done. It is
coarse looking, perennial succulent plant, grown close to the ground in a typical rosette shape,
Strong, shallow and fibrous roots have arbuscular mycorrhiza. Leaves are crowded on the top of
the stem with spiral orientation. Dark green leaves have glaucous spots, wider at the base
tapering gradually to the pointed tip, concave above, convex beneath, serrated margins. Rind,
sap, mucilage gel, inner gel is layers of leaves. Flowers are born in terminal racemes on the
scape.Stalked, numerous having yellow tubular corolla with six stamens. Fruits are oblong,
ovoid. The micrograph of the adaxial leaf epidermal layer exhibited the characteristic
plasmolyzed cytoplasm, sunken stomata complex having two guard cells, tetracytic, hexagonal
epidermal cells and some cells were small square shape. In contrast, the abaxial leaf epidermal
layer was less plasmolyzed and cell walls were less thick. Epidermal tissue, chlorenchyma,
aquiferous tissue, vascular bundle are four type of tissues present in leaves. The Tikta Rasa was
observed as the predominant Rasa of Kumari Swarasa (70%). According to 50% volunteers both
Katu and Tikta Rasa were present.