Chamaecyparis lawsoniana (A. Murr.) Parl. known as ‘Port – orford cedar’ is a large tree belonging to the family Cupressaceae. The young aerial parts are used as medicine in Homoeopathy. The leaves are small, linear, ovate elliptic, adnating or adpressed hiding the stem. Stomata are anomocytic and restricted to the periphery at margins. In T.S. leaf is crescent shaped with 1-3 secretory canals in the mesophyll. Young stem is angular to rounded. Cortex is interspersed with secretory canals . In mature stem 6-8 layered phellem replaces the epidermis. Secondary xylem is abundant with growth rings. Starch grains and prismatic crystals of calcium oxalate are present in the cortex and mesophyll. Physico–chemical parameters of raw drug viz., extractive value, ash values, formulation, besides weight per mL, total solids, alcohol content along with High Performance Thin Layer Chromatography (HPTLC) and UV – visible studies have been worked out for mother tincture