Two cultivars of the filbert tree or shrub, the purple-leaved filbert (Corylus maxima Purpurea) and the purple-leaf European filbert (Corylus avellana Fusco-Rubra), produce purple leaves and work well in landscapes as screens or hedges.
Cambodia (7.5 million). The national language is Khmer, spoken by about 85 percent of the population. It is co-official with French, which has perhaps 500,000 speakers. Chinese and Vietnamese are each spoken by about 400,000 people. Among tribal languages, Cham is the most important, with about 100,000 speakers.
Cambodia Health Service Delivery Profile, 2012 1 Cambodia health service delivery profile Demographics and health situation In 2011, Cambodia's population was 14.3 million. In 2010 the median age was 22.9 years. The majority of the population (80.5%) reside in rural areas, practicing traditional wet rice cultivation and other forms of agriculture.