Abstract
Ruta graveolens
L., is a odoriferous herb belonging to the family Rutaceae. It is the source of Rue or Rue oil, called as
Sadab
or
Satab
in Hindi. It is distributed throughout the world and cultivated as a medicinal and ornamental herb. The ancient Greeks and Romans, held the plant in high esteem. It is used in Ayurveda, Homoeopathy and Unani. Phytochemical constituents and pharmacological properties were studied in depth. In 14 species of genus
Ruta
,
R. graveolens
and
R. chalepensis
are available in India and also cultivated in gardens. Taxonomical characters to identify the Indian plants are very clear with fringed and or non-fringed petals. However, references to it are confused in the traditional literature. Due to sharing of regional language name, its identity is confused with
Euphorbia dracunculoides
. Morphological and anatomical characters were described. Pharmacognostic studies with microscopic characters were also published. Upon reviewing the anatomical characters and pharmacognostic characters one finds that it is highly confused and conflicting. The characters described are opposite of each other and authenticity of the market sample of
R. graveolens
cannot be guaranteed and able to be differentiated from
R. chalepensis
. Present work is to describe the pharmacognostic characters of
R. graveolens
to differentiate it from
R. chalepensis
. It is concluded that morphologically,
R. graveolens
can be identified with its non-fringed petals and blunted apices of fruit lobes. Whereas, in
R. chalepensis
petals are fringed or ciliated and apices of the fruit lobes are sharp and projected. Microscopically, in stem of
R. graveolens
pericyclic fibers have wide lumen. Whereas, in
R. chalepensis
, it is narrow. The published pharmacognosy reports do not pertain to authentic plant or some of the characteristic features like glandular trichomes are not observed in our samples.