Our intensive survey of aroids of Western Ghats in the States of Maharashtra, Karnataka, and Goa for the last 10 years has resulted in the discovery of three new species of aroids. Of the three species, Arisaema sabyadrica Yadav, Pati!, and Bachulkar [Willdenowia 23:177-179, 1993.1 and Amorpbopballus konkanensis Hetterscheid, Yadav & Pati! [Blumea 39:289-294, 1994.1 have already been described, and one more new species of Arisaema is described here. Arisaema sivadasanii Yadav, Patil & Janarthanam sp. nov.