Definition: The word "achylous" means a plant with narrow, shallow branches. It is typically found in moist soil or near water sources such as streams, lakes, and rivers. The narrow leaves are often arranged in whorls, giving the plant an umbrella-like shape. The stem of the achylous plant grows from a center root and can grow up to three feet tall. The definition of "achylous" refers to plants with narrow, shallow branches that provide protection against water loss during droughts or other extreme conditions. It is also used to describe a type of plant with narrow leaves and whorls of leaves arranged on the stem, giving it an umbrella-like shape. The achylous plant's name comes from its resemblance to an umbrella, which adds to its overall shape and appearance.