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Long-lived above-ground creeping stems. Flowers of some plants develop on orthotropic branches which bend down later and become horizontal. Fragmentation starts after several years, due to decaying of the oldest parts of the plagiotropic stem. Nodes on plagiotropic stems bear leaves, internodes are usually long, branching is monopodial or sympodial. The stems serve as vascular connections between old and young parts of a plant. Vegetative spreading may be fast and persistence is variable

[other examples: Linnaea borealis, Oxycoccus microcarpus, Salix reticulata, Veronica fruticulosa].