The Sariska Tiger project covers an area of about 881 km2 is situated 180 km from Delhi and about 120 km from Jaipur. The remarkable characteristics of the hills are there homogenetic regularity of height, level submmits and uniform appearance, stretching out from North – East to South – West in more or less parallel lines Soni (2000). Adhatoda vasica has invaded the core area of the Sariska Reserve Forest and grows luxuriantly, threatening the survival of herbaceous species. It is, therefore, imperative to study the ecology of Adhatoda vasica in the forest which may be valuable for the control of this plant.

Keywords: Sariska Tiger Project, herbaceous, Ecology, Forest.