Caralluma retrospiciens

Issued in 1965 as part of Mauritania's Flora series, this stamp commemorates Caralluma retrospiciens, a succulent plant native to arid regions of Africa and well adapted to desert and semi-desert environments. The series was issued to showcase notable plant species and to promote interest in botany, natural history, and the unique vegetation of dry climates. Succulent plants such as Caralluma are remarkable for their ability to survive in areas with limited rainfall, making them important components of fragile desert ecosystems.

By featuring Caralluma retrospiciens, the Islamic Republic of Mauritania highlighted the resilience and diversity of plant life in arid environments. The issue celebrated the country's botanical heritage and encouraged appreciation of native flora, emphasizing the importance of preserving ecosystems that support specialized species adapted to harsh climatic conditions.