Seseli elatum subsp. osseum is a herbaceous 

 in the Apiaceae that produces compound umbels with white or yellow petals. Leaves are pinnately divided, the blades 1–3-pinnate, and the plant can develop a woody base with a conic taproot. Flowering occurs from July to September in the UK, followed by ovoid to ellipsoid fruits.

Seseli elatum subsp. osseum belongs to the carrot family, Apiaceae, and carries the structural traits typical of that group: pinnate leaves, compound umbels and small white or yellow petals. Individual plants can form a woody base above a conic taproot, a combination that often supports long-term establishment rather than frequent relocation. Planting and handling take that root form into account; a conic taproot makes established specimens difficult to lift and divide without damage, so choose a lasting position or propagate by seed where possible. Flower heads appear in the heat of summer, with the UK flowering window from July to September, and are followed by ovoid or ellipsoid fruits that contain the next generation of seed. Usefully architectural in summer schemes that include other umbellifers, Seseli elatum subsp. osseum contributes height and a clustered-flower silhouette when in bloom. Because the fruiting bodies are readily visible after flowering, collect ripe seeds for propagation or allow them to set where you wish the plant to naturalise; the seed stage is the most straightforward way to increase stock without disturbing the taproot.

Seseli elatum subsp. osseum is a herbaceous perennial in the Apiaceae that produces compound umbels with white or yellow petals. Leaves are pinnately divided, the blades 1–3-pinnate, and the plant can develop a woody base with a conic taproot. Flowering occurs from July to September in the UK, followed by ovoid to ellipsoid fruits.

Seseli elatum subsp. osseum is a perennial Apiaceae with compound umbels and white or yellow petals, flowering July to September in the UK.

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