Species Name (as per The IPNI) : Vincetoxicum hirundinaria Medik.
Common name : Swallow-Wort
Habit : Perennial herb
Habitat : Open, dry habitats in varied situations from pine woodland to grassland and river banks; 2100 - 3650 m. altitude
Key identification features : Inflorescence usually pedunculate, somewhat lax, with pedicels 5-10mm. Inner surface of corolla lobes glabrous or sparsely pubescent.
Flower, Fruit : April-August
Distribution :
Uttarakhand : Uttarakhand
Sikkim : North Sikkim (Mangan) district,East Sikkim (Gangtok) district,West Sikkim (Geyzing) district
Native : Albania, Algeria, Austria, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Czechoslovakia, Denmark, European Russia, East Himalaya, Finland, France, Germany, Greece, Hungary, India, Italy, Kazakhstan, Krym, Morocco, Nepal, Netherlands, North Caucasus
Exotic/Native : Native
World Distribution : Europe to West Siberia and North Turkey, North-West Africa, Himalaya
Literature : Uniyal B.P., Sharma J.R., Choudhery U., Singh D.K. (2007). Flowering Plants of Uttarakhand: A Checklist. Bishen Singh Mahendra Pal Singh: 174; GRIERSON A.J.C. & LONG D.G. (1983). FLORA OF BHUTAN INCLUDING A RECORD OF PLANTS FROM SIKKIM Vol. 2: Part 2. ROYAL BOTANIC GARDEN, EDINBURGH: 699