Invasive South American weed - Tradescantia fluminensis vell. (Commelinaceae): a threat to native flora of India.
During a recent floristic survey in Srinagar Garhwal, Uttarakhand, India, a herb with shining white flowers was found in a shady place, adjacent to the road, forming dense patches in few localities nearby. The plant was identified as Tradescantia fluminensis, belonging to the family Commelinaceae. It was further found on perusal of the literature that this species is yet not reported in any of the published flora of Garhwal District and flowering plants checklist of Uttarakhand, therefore, it also forms a new addition to the state's flora. Information is given on its morphology, flowering and fruiting dates, distribution and invasiveness.