Abstract
Ornamental plants are still one of the components of plant biodiversity, due to their beautiful flowers or folia, fruits and, shape that are of aesthetic, economic and cultural interest for people. The purpose of this study is to make an inventory of ornamental plants and their local uses in the municipalities of Bangui and Begoua areas that can be used to establish a database of horticultural flora of Central African Republic. Ethnobotanical surveys have made it possible to collect information on the scale of households and furnished areas. This inventory shows an important diversity. Thus, 196 species targeted as ornamental plants divided into 122 genera and 65 families have been reported. The Fabaceae family (9 genera and 14 species) is the most represented, followed by the Euphorbiaceae (8 genera and 11 species), Araceae (7 genera and 9 species); Liliaceae (7 genera and 8 species) and, Malvaceae (6 genera and 8 species). Herbs are the most represented morphological types (39, 80%) followed by shrubs and, trees (21, 94%), and lianas (14, 58%). Out of all the uses reported, food plants were the most represented (65) followed by medicinal plants (55). The decoction (52%) and the infusion (20%) are respectively the methods of preparation of the most cited recipes followed by crushing (13%). The leaves (38%) and flowers (10%) are the most used organs. Reproduction by seeds is the most widely used method of propagation (53, 27%) followed by cuttings (30, 65%). Key words: Ornamental plants, diversity, local uses, Central African Republic.
Highlights
The biological diversity plays an important role in the Spiritual and cultural life of many human societies Animal and microbial species are responsible for soil composition, maintaining their quality, detoxication and wastes‟ decomposition
Horticulture is mostly practiced by adult people of more than 30 years old with the most predominance being 5055 years old: aged people are most interested in ornamental plants and green spots
The study carried out in the communes of Bangui and Bégoua is the first in Central African Republic; it made it possible to apprehend the diversity of the horticultural flora as well as the endogenous uses
Summary
The biological diversity plays an important role in the Spiritual and cultural life of many human societies Animal and microbial species are responsible for soil composition, maintaining their quality, detoxication and wastes‟ decomposition. Maintaining species‟ diversity enables the natural parasites control, pollution, cultures production and flood security. This biological diversity is the sine qua non condition for the recovery of the ecosystem and forms of life and their capacity to prevent and defend themselves against catastrophe and unfavorable conditions (Boisson de Chazournes, 2009). Being part of that biological diversity, ornamental plants present an aesthetical interest due to the fact of the beauty of their flowers, or foliage, or fruits or stems. Like cultivated plants, they are always the result of an intensive selection. For the conception and keeping parks, green spaces and gardens, landscapers and amateur gardeners use specific plants
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