Polygonum mersinicum (Polygonaceae), A New Species from Turkey

Polygonum mersinicum M. Keskin sp. nova (Polygonaceae) is described from Turkey. It resembles especially P. karacae but differs from it by several morphological characters such as a short stem, glandular indumentum, shorter leaves, type of ochrea, shorter tepals, and longer nuts. Diagnostic features, a comprehensive description and images of P. mersinicum are provided.