Aruncus dioicus (Walter) Fernald, Rhodora 41:423. 1939. (syn: (≡) Actaea dioica Walter (basionym); (=) Aruncus asiaticus Pojark.; (=) Aruncus dioicus var. kamtschaticus (Maxim.) H. Hara; (=) Aruncus dioicus var. pubescens (Rydb.) Fernald; (=) Aruncus sylvester Kostel. ex Maxim.; (=) Aruncus sylvester var. vulgaris Maxim.; (=) Aruncus vulgaris (Maxim.) Raf. ex H. Hara; (≡) Spiraea aruncus L.);
It has alternate, pinnately compound leaves, on thin, stiff stems, with plumes of feathery white or cream flowers borne in summer.
This plant can be found in moist woodland, often at higher altitudes, throughout temperate areas of Europe, Asia, and eastern and western North America. In the UK it is considered suitable for planting in and around water areas, and has gained the Royal Horticultural Society‘s Award of Garden Merit.
In Italy the young shoots are eaten, usually boiled briefly in herb infused water, and then cooked with eggs and cheese. In Friuli it is one of the ingredients in the local home-made soup based on wild greens called ‘pistic’.
(From Wikipedia on 7.9.15)
A Rosaceae plant Aruncus dioicus from Botanical Garden, Warsaw, though it is summer blooming plant, but there was no flower on it at that time.