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water parsnip, any of several aromatic herbs of the genus Sium, especially S. latifolium, belonging to the parsley family (Apiaceae), distributed throughout the Northern Hemisphere and Africa. They grow in moist areas, and some species are even partially submerged.
Sium suave, the water parsnip or hemlock waterparsnip, is a perennial wildflower in the family Apiaceae. It is native to many areas of both Asia and North America. The common name water parsnip is due to its similarity to parsnip (Pastinaca sativa) and its wetland habitat.
Water parsnip is a common name given to a number of flowering plants in the family Apiaceae, including those from the Berula and Sium genera. Berula. Berula erecta, cutleaf water parsnip or water parsnip.
Sium latifolium is a species of flowering plant in the family Apiaceae known by the common names great water-parsnip, greater water-parsnip, [1] and wideleaf waterparsnip. [2] It is native to much of Europe, Kazakhstan, and Siberia. [1] This plant grows in wet habitat such as swamps and lakeshores, sometimes in the water.
water-parsnip. Sium carsonii Dur. ex Gray; S. cicutifolium Schrank • CT, MA, ME, NH, RI, VT. Shorelines, swamps, marshes, shallow water of lakes and rivers.
Water parsnip often grows in shallow water, with its submerged leaves divided into thread-like segments. Tiny white flowers bloom in summer (July-September) in domed umbels (to 2-3" wide) subtended by narrow leaf-like bracts. Flowers are followed by small, ribbed, oval fruits.
The lesser water-parsnip is a perennial, aquatic plant that grows in shallow, clear, flowing water at the margins of ditches, ponds, lakes and rivers. It can grow quite tall and displays umbrella-like flower heads from July to September.
