GC and GC-MS analysis of leaf and root oils of Artemisia capillaris Thunb. syn. A. scoparia Waldst. & Kit. (family: Asteraceae) showed the dominant presence of phenyl alkynes (61.2%, 85.5%), viz. capillene 60.2% and 82.9%, respectively besides 1-phenyl-penta-2,4-diyne. Besides phenyl alkynes the leaf oil contained gamma-terpinene (11.1%), p-cymene (4.5%), and (E)-beta-ocimene (4.4%), while the root oil showed only trace quantities of monoterpenoids.