calyxshaped

Calyx-shaped is a descriptive term in botany used to describe structures that resemble a calyx, the outer envelope of a flower formed by the sepals. The calyx normally surrounds and protects the developing bud and can persist after flowering in some species.

In flowering plants, the calyx may be free (sepals separate) or fused into a tube; calyx shapes range from simple cup- or bowl-like forms (urceolate) to urn- or funnel-shaped structures. The degree of fusion, lobing, and persistence varies by species and can influence fruit development, protection of the developing ovary, and sometimes the appearance of the fruiting body. Calyx-shaped structures are discussed as a morphological feature rather than as a taxonomic rank and are used to convey resemblance to the calyx in internal or external form.

Examples include the lantern-like husk formed by the calyx of Physalis species, such as Physalis alkekengi, which encircles the fruit. In other plants, a persistent calyx may be papery or fleshy and contribute to the appearance of the fruit or seed pod. The term calyx-shaped is thus applied broadly in botanical descriptions to indicate a calyx-like outline or enclosure around floral or fruiting structures.

Etymology traces to Latin calyx, calycis, meaning cup or chalice. Within botanical terminology, calyx shapes are part of perianth morphology, alongside the corolla (petals) and the androecium.