Argentina egedei

Argentina egedei44, known as Eged's silverweed, is a flowering perennial plant in the rose family, Rosaceae. It is also sometimes called "Pacific silverweed", though this usually refers to A. pacifica.

Description

Eged's silverweed is a low-growing herbaceous plant with creeping red stolons up to long. The leaves are long, evenly pinnate into in crenate leaflets long and 2 cm broad, thinly covered with a few silky white trichomes. The sparsity of the hairs is a useful distinction from A. anserina, which is more densely hairy.
The flowers are produced singly on 5–15 cm long stems, 2–3.5 cm diameter with five yellow petals. The fruit is a cluster of dry achenes.

Taxonomy

It was formerly classified in the genus Potentilla as Potentilla egedei. It is considered a member of the Argentina anserina species aggregate, or is alternatively treated as a subspecies of A. anserina by some botanists.

Distribution and habitat

It is a halophyte native to Arctic and cool temperate coasts of the Northern Hemisphere, most commonly growing in salt marshes. The southern limits of the range are California and Long Island, New York in North America, and the Baltic Sea and coastal eastern Siberia in Eurasia.