an Old World plant with flat five-petalled flowers and glossy leaves. Some kinds are grown as an ornamentals and some contain alkaloids used in medicine 长春花
Genera Vinca and Catharanthus, family Apocynaceae 蔓长春花属和长春花属,夹竹桃科
语源
late Old English peruince, from late Latin pervinca, reinforced in Middle English by Anglo-Norman French pervenke. The change of -v- to -w- and the addition of -le seem to have occurred before the appearance of periwinkle