tejasvini :

Morphology:

Timru is an evergreen, thorny shrub or small tree, attaining a height up to 6 m.
Leaves are 4–20 cm long, imparipinnate, pungent, and aromatic with glabrous, narrowly winged petiole having two stipular prickles at the base.
Leaflets are lanceolate, glabrous on the underside, and occur in two to six pairs.
The plant can be recognized by its shrubby habit, dense foliage, with pungent aromatic taste, prickled trunk and branches, and small red, subglobose fruits.
Flowers occur in dense terminal or sparse axillary panicles and are green to yellow in colour.
Calyx consists of six to eight sub-acute lobes.
Stamens are about six to eight in number. Ripe carpels or follicles are usually solitary, pale red, and tubercled.
Seeds are globose, shining, and black.
Flowering occurs from March to May, while fruiting occurs from July to August.

Histology:

-Fruit - Pericarp shows large oil cavities and vascular tissues surrounded by parenchymatous cells containing irregular masses of hesperidin and followed by 2 to 5 layered palisade-like cells, hesperidin insoluble in organic solvents but soluble in potassium hydroxide. Seed - Testa shows wide, very thick-walled, irregular, non-lignified cells having blackish-brown contents and numerous oil globules; tegmen shows 3 or 4 oval to polygonal tangentially elongated thin-walled parenchymatous cells, followed by 8 to 10 layers tangentially elongated tabular cells filled with reddish-brown contents; endosperm consists of thin-walled, polygonal, parenchymatous cells.

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