is the condition of some flowers in which the petals are fused together (sym- together). in some of these flowers, like with Gentiana asclepiadea

Gentiana asclepiadea

Gentiana asclepiadea is a species of the genus Gentiana. It is native to central and eastern Europe from primarily mountain woodland though it does occur in less wooded open pasture in some areas, perhaps persisting after woodland clearance.One of the larger species within the genus, it produces...

are only partially fused at the base, but in other flowers, such as Gentiana andrewsii

Gentiana andrewsii

Gentiana andrewsii is a herbaceous species of flowering plant in the Gentian family Gentianaceae....

, they are fully fused and never open. Flowers with may be self-pollinated

Pollination

Pollination is the process by which pollen is transferred in plants, thereby enabling fertilisation and sexual reproduction. Pollen grains transport the male gametes to where the female gamete are contained within the carpel; in gymnosperms the pollen is directly applied to the ovule itself...

, while others may have small holes and be pollinated like regular plants.