Alien flora of Uttarakhand, western Himalaya: a comprehensive review

Alien plant species have captured attention of the scientific community, ecologists, and environmentalists throughout world. Like other regions, Himalayan region is also grappling with disrupting impacts invasions. Based on an extensive review studies conducted alien in Indian region, we report 728 belonging to 450 genera under 108 families state Uttarakhand, which represents 15% state’s flora. Fabaceae (89 49 genera) followed by Asteraceae (63 43 Poaceae (50 35 were most diverse amid species. Eucalyptus (15 species) Ipomoea Euphorbia (12 each) Pinus (11 genera. The maximum numbers aliens (mostly herbs) introduced from America, Europe. Owing relatively high number it submitted that serious ecological socio-economic consequences are likely escalate future.