Rhipsalis is a genus of cacti that has actually been gaining popularity over the last few years. These distinct plants belong to Central and South America and are understood for their uncommon appearance and development practices. Unlike most cacti, which grow in dry, desert environments, Rhipsalis are epiphytic, suggesting they grow on other plants or objects, such as trees or rocks. They have actually adapted to grow in the damp, rainforest environment of their natural habitat by soaking up moisture and nutrients from the air and rain. 30 Types Of Popular Rhipsalis Pictorial Guide.