The black pepper plant (Pipernigrum) is a woody vine that produces the spice peppercorn. It has glossy, dark green leaves, small white to yellow flowers, and round fruits that turn red when ripe. Alternate on the stem. Almond-shaped, tapered at the tip. Glossy, dark green on top, pale green underneath. Fruits : Round, dark green when unripe, red when ripe,About 5 mm (0.2 inch) in diameter,Botanically known as drupes,Each fruit contains a single seed