Nertera

Nertera is a genus of about 15 species of flowering plants in the family Rubiaceae, native to the Southern Hemisphere, in South America and Australasia, with one species extending into the Northern Hemisphere in Central America, eastern Asia, and Hawaii. The name derives from the Greek word nerteros, meaning low down. Common names include pincushion, coral bead or bead plant. They are prostrate, creeping, mat-forming herbaceous perennial plants growing to across or more but no more than a few centimetres high. The leaves are usually quite small, and when crushed may in some species release a f