Abstract
Greater Kabylia is a regional hotspot characterized by a multitude of ecosystems, from the coast to the high mountains. The only reference study on orchids did not take into account the entire territory of the wilaya of Tizi Ouzou, unlike Bejaia (the neighboring wilaya). The present study completes the inventory, ecology and distribution of the various orchid species in the wilaya. After a year's inventory, a total of 45 autonomous taxa plus 5 casual hybrids among 11 genera (Anacamptis, Androrchis, Cephalanthera, Epipactis, Dactylorhiza, Limodorum, Neotinea, Ophrys, Orchis, Serapias, Spiranthes) was recorded at 275 distinct locations, yielding over 1000 unique observations. This inventory makes this wilaya the richest to date for Algerian orchidoflora. These species are therefore of great value in terms of conservation issues, either for heritage value (endemic, protected), or for their risk of extinction (threatened, rare).