From the genus name Pentas.
pentas (plural pentas)
- Any of the flowering plants of the genus Pentas, especially the Egyptian starcluster, Pentas lanceolata.
- 2003, Norman Winter, Tough-as-nails flowers for the South, Jackson: University Press of Mississippi, →ISBN, page 38:
- The next step may be the most crucial to happiness with your pentas. If your soil is acidic and you grow azaleas, camellias, or blueberries with ease, then add lime to your pentas' planting area.