Bara bet (Calamus viminalis Willd. var. fasciculatus Becc.) seedlings produced a well-developed taproot within 10 days of germination. After one month the secondary roots were found to appear from the taproot system. The rate of taproot elongation declined subsequently and at the age of 5 months lateral roots developed from the base of stem. The taproot either stopped growing or degenerated between 6 and 11 months and profuse lateral roots of about 30 cm length developed by the age of 12 months. The number of lateral roots and their length and depth from ground level increased with age. A mature plant of 6 years produced about 4.13 m long lateral roots, 30 cm below ground level anchoring approximately 16 m3 of soil. The root system was of horizontal spreading type. The plant also produced maximum number of vertical rootlets within 30 from the base of long lateral roots. The diameter of root from the base to tip was more or less uniform but abruptly tapered at the tip, with a thick, pointed root cap.