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.
The Vietnamese Language. Vietnamese is the official language of Vietnam and is spoken throughout the country, albeit with variations of dialect. English is the second language, superseding Russian, which was dropped after the USSR collapsed. Some French is spoken, mainly by older people in the south. Many of Vietnamâs fifty-four ethnic groups speak their own language, and some Kâmer is spoken in the Mekong Delta close to the Cambodian border. New career opportunities in tourism and international trade have been a stimulus for young people to become fluent in Japanese, Chinese or Western European languages.