The Vinca rosea - நித்திய கல்யாணி seen at Hougang Avenue 4, Singapore.This is a perennial herb, everblooming with flowers commonly rose-purple or white. Cultivated as an ornamental plant, often running wild. Seen to grow even in cracks of concrete paves. Some cultivars with red, pink and multi-coloured petals.
Fruits follicular, about 25mm long, with many small seeds.Common names: Periwinkle, pin-wheel flower...
Botanical synonyms: Catharanthus roseus, Lochnera rosea.
