What name is given to a plant that has a stem that grows horizontally below the surface of the soil?
Geranium nodosum grows on calcareous and siliceous substrates with neutral pH and average soil moisture. It occurs at altitudes of above sea level. Geranium nodosum Geranium nodosum, the knotted crane's-bill, is a perennial herbaceous plant belonging to the Geraniaceae family. "Geranium nodosum" is a rhizomatous geophyte, a plant that propagates by means of a rhizome, a reproductive structure in the form of a horizontal stem which produces the stem and the roots below the soil surface. During the winter the plant has no aboveground herbage, having become reduced to the rhizome. The plant generally reaches in height, with a maximum of .
Plant stem Plant stem A stem is one of two main structural axes of a vascular plant, the other being the root. The stem is normally divided into nodes and internodes: The term "shoots" is often confused with "stems"; "shoots" generally refers to new fresh plant growth including both stems and other structures like leaves or flowers. In most plants stems are located above the soil surface but some plants have underground stems. Stems have four main functions which are: Stems are often specialized for storage, asexual reproduction, protection or photosynthesis, including the following: Stem usually consist of three tissues, dermal tissue,