Loment

Loment

Hedysarum hedysaroides, a plant that produces loments

A loment is a type of indehiscent fruit that is characteristic of certain members of the Fabaceae family, also known as the legume family. Loments are a specialized form of legume that break apart at constrictions between the seeds, resulting in one-seeded segments. This adaptation is thought to aid in seed dispersal.

Structure and Formation

Loments are similar to typical legumes in that they develop from a single carpel and contain multiple seeds. However, unlike the typical legume, which splits open along two seams to release its seeds, a loment breaks apart at constrictions between the seeds. Each segment of a loment contains a single seed and remains closed, which classifies it as indehiscent.

The formation of loments involves the development of transverse constrictions along the length of the fruit. These constrictions are areas of weakness that facilitate the breaking apart of the fruit into individual segments. The segments are often dispersed by wind, water, or animals, aiding in the distribution of the seeds.

Examples of Plants with Loments

Several genera within the Fabaceae family produce loments. Notable examples include:

• Hedysarum - This genus includes species such as Hedysarum hedysaroides, which is known for its distinctive loments.
• Desmodium - Commonly known as tick-trefoils, these plants have loments that often adhere to animal fur or clothing, facilitating seed dispersal.
• Aeschynomene - Known as jointvetches, these plants produce loments that break into one-seeded segments.

Ecological Significance

The loment's structure is an adaptation that enhances seed dispersal. By breaking into smaller, one-seeded units, loments can be more easily transported by various dispersal agents. This can increase the likelihood of seeds reaching suitable habitats for germination and growth.

In some species, the segments of the loment are equipped with hooks or barbs that allow them to attach to animal fur or feathers, a mechanism known as epizoochory. This method of dispersal can transport seeds over long distances, expanding the range of the plant.

Related Pages

• Legume
• Indehiscent fruit
• Seed dispersal
• Fabaceae