stolon

noun

1. Bot. a creeping stem that lies on or above the soil surface and bears foliage leaves, as in the strawberry or creeping bent grass
2. Zool. a stemlike, cylindrical structure, as in certain hydroids and tunicates, giving rise to buds from which new individuals grow

Origin: ModL stolo (gen. stolonis) < L, a shoot, twig, scion: for IE base see still