The Cuban archipelago is located in the Caribbean and it´s recognized as one of the leading Biodiversity Hotspots on the planet currently. Particularly, Acacia belairioides is a species of ultramaphic rocks outcrop surrounding city of Holguín, Cuba. This species is distributed in an area smaller than 800 km2 are known and it is estimated that the area occupied by individuals less than 10 km2, so the species is considered Critically Endangered. The number of adult plants in each sub-population is estimated at less than 50, but their actual number is unknown. Therefore, it is among the 50 most endangered species in Cuba.  The objectives of this project are: 1) to update the population structure and main threats to the conservation of Acacia belairioides in serpentines of Holguín, Cuba, 2) characterize suitable sites for germination and seedling establishment, 3) reproducing the species under nursery conditions to restore the affected populations and 4) carrying out training program in situ to qualify technical personnel for the conservation of the target species.