Mertensia asiatica is a perennial member of the borage family that produces salverform (trumpet-shaped) flowers from pink-tinged buds. The blooms are typically blue but can occasionally be white, and they appear from April to June. Plants belong to the genus Mertensia and are native to Asia.

Mertensia asiatica produces pink-tinged buds that open to blue or white salverform flowers from April to June.

Mertensia is a genus of flowering plants in the borage family Boraginaceae. They are perennial herbaceous plants with blue or sometimes white flowers that open from pink-tinged buds.

Mertensia asiatica

Bluebell (Mertensia asiatica) | Spring Mertensia

Mertensia ciliata is a species of flowering plant in the borage family known by the common names mountain bluebell, tall fringed bluebells, and streamside bluebells.

https://en.wikipedia.org/wiki/Mertensia_ciliata

Mertensia ciliata

Mertensia ciliata 'Blue Drop'

Mertensia maritima is a perennial herb in the Boraginaceae that gives off a mild, oyster-like scent. It forms a low plant to about 0.2 m and flowers from April to June. The species is native to the Northern Hemisphere and is fully hardy in the UK (H7).

Oysterplant (Mertensia maritima) is a fully hardy perennial that flowers April to June and favours full sun on sandy, well-drained soil.

https://en.wikipedia.org/wiki/Mertensia_maritima

Mertensia maritima

Oysterplant (Mertensia maritima) | Oyster-scented perennial

Mertensia paniculata, also known as the tall lungwort, tall bluebells, or northern bluebells, is an herb or dwarf shrub with drooping, bright-blue, bell-shaped flowers. It is native to northwestern North America and the Great Lakes.

https://en.wikipedia.org/wiki/Mertensia_paniculata

Mertensia paniculata

Mertensia virginica is a spring ephemeral plant in the Boraginaceae (borage) family with bell-shaped sky-blue flowers, native to eastern North America.