The objective of this research was to contribute to identification of forage trees and shrubs available in Butembo city. The inventory has revealed 30 forage lignous species usefull for local livestock, distributed between 19 botanical families, whose 18 shrubs (60%) and 12 trees (40%). The more identified family is Fabaceae represented by 8 species or 26,6% of samples (Acacia mollisima, Caesalpinia sp, Cajanus cajan, Calliandra calothyrsus, Erythrina abyssinica, Indigofera sp, Jacaranda mimosaefolia and Sesbania sesban), followed by Rosaceae with 3 species or 10% (Mespilus germanica, Rosa hybrida and Rubus idocus), then Myrtaceae with 2 species or 6,6% (Eucalyptus sp and Psidium guayava) and Solanaceae with 2 species or 6,6% (Datura deltel et Datura stramonium), finally 15 other families each one represented by 1 species or 3,3%: Agavaceae (Dracaena arborea), Anacardiaceae (Mangifera indica), Bignoniaceae (Markhamia lutea), Caprifoliaceae (Sambucus nigra), Combretaceae (Terminalia manthaly), Cupressaceae (Cupressus lusitanica), Euphorbiaceae (Manihot esculenta), Lauraceae (Persea americana), Malvaceae (Hibiscus sabdarifa), Meliaceae (Azadirichta indica), Moraceae (Morus nigra), Poaceae (Arundinaria alpina), Proteaceae (Grevillea robusta), Tiliaceae (Triumfeta cordifolia) and Verbenaceae (Lantana camara). The leaf is, among these shrubby specices edible organs, the more ingested organ by livestock (62% of species).

Following the phenological observations of the species of the Forest Reserve of Kalikuku in the face of seasonal variations in the climate, data on 30 taxa divided into 25 botanical families were collected. Fabaceae have more species than other families (16.6%).Defoliation (from May to August) is noticeable in 50% in Parinari holisti and Trema orientalis, in 70% in Carapa grandifolia and Ocotea usambarensis and in 100% in Bridelia micranthalj, Albizia gummifera and Piptadeniastrum africanum.Whereas, for the entire massif, flowering (November-mid-February) and its peak (December-January), fruiting (January-April), sheath dissemination (March-June), then regeneration (August-December) synchronously with the foliage influenced, at the same time, by precipitation from August to December, are the events summarized in the phenogram. As for the local use of wood, the surveys revealed 8 species involved in crafts, 12 in herbal medicine and 10 in mushroom production.