👉 Lithacrosiphon is a genus of flowering plants in the family Primulaceae, native to South America and Central Asia. They are commonly known as the "Lithocarps" or "Lithic Carrots," due to their hard, black, and shiny outer leaves that resemble carrot tops. These plants have a long, slender stem with many branches, which is why they're often referred to as the "lithocarp tree."