The term legume had two closely related meanings in botany, a situation encountered with few botanical common names of useful plants, whereby an applied name could refer to either the plant itself, or to the edible fruit (or useful part).

An oval or round shaped bright yellow citrus fruit that is sought for its tart flavored, highly acidic juice and skin. This type is most often available are the common lemon and also the Meyer lemon. The common lemon is larger in size and very bright yellow in color and has either a smooth skin or a rough, somewhat knobby skin. The smooth skinned lemons are good for cooking or juicing while the rough skinned lemons are best for grating.

In botany, small shrub like tree (Citrus aurantifolia) of the family Rutaceae (rue family), one of the citrus fruit trees are similar to the lemon but more spreading and very irregular in growth. The true lime, a natural hybrid of the citron and papeda, is native to SE Asia and was introduced into S Europe, the West Indies, Mexico, Florida, and California.

Lychee is a tropical and subtropical fruit tree native to China, and now cultivated in many parts of the world. The fresh fruit has a "delicate, whitish pulp" with a "perfume" flavor that is lost in canning, so the fruit is mostly eaten fresh. The outside of the fruit is covered by a pink-red, roughly-textured rind that is inedible but basically removed to expose a layer of sweet, translucent white flesh.