Lathyrus Nissolia is a species of flowering plant that is commonly known as narrow-leaved everlasting pea. However, there are several other synonyms that are used to refer to this plant, such as slender sweet pea, slender everlasting pea, and narrow-leaved vetchling. These synonyms are often used interchangeably, depending on the region or the context in which the plant is being referred to. Lathyrus Nissolia belongs to the family Fabaceae and is native to Europe and Western Asia. It is a perennial plant that can grow up to 1.2 meters in height and produces beautiful pink and white flowers.