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.
An Ancient Language. Khmer is possibly one of the oldest Southeast Asian languages-Khmer Mon, the oldest form of Khmer, could have been spoken as far back as 1000 BC and there are stone inscriptions in Khmer dating back to 600 AD. It has roots in Sanskrit and Pali, the language of Buddha.