10.22376/ijpbs.2019.10.1.p1-12 Volume 4 Issue 4 2013 (October - December) lessThan i greaterThan Heliotropium dasycarpum lessThan /i greaterThan is an important desert plant of Boraginaceae family. The fresh extract of plant is used for the treatment of eye diseases. In the present study, dichloromethane and methanol crude extracts of plant was screened for antifungal, antibacterial and phytotoxic bioassay. Both extracts of lessThan i greaterThan Heliotropium dasycarpum lessThan /i greaterThan inhibited the growth of lessThan i greaterThan Lemna minor lessThan /i greaterThan L. and showed significant phytotoxic activities. The plantexhibited non-significant activity when tested against pathogenic gram positive and gram negative bacteria. The methanol extract of the plant showed 25% inhibition against a fungus, lessThan i greaterThan Microsporum canis lessThan /i greaterThan . The phytochemical tests indicated the presence of alkaloids and cardiac glycosides in the plant. M. ABUZAR GHAFFARI, S. BANO AND K.HAYAT Heliotropium dasycarpum, Phytotoxicity, LD50, Lemna minor L. 339-345