Rosa multiflora Thunb. ex Murr.
Multiflora Rose
Invasive non-native

New Castle County
May 2001

New Castle County
May 2001

Middle Run Valley Natural Area
September 2009

Woodlawn Tract
April 2016
Witch's-broom or rose rosette.

White Clay Creek State Park -- Creek Road
May 2016

May 2018

May 2018

Ashland
May 2019
The pistils are united into a long column, a distinguishing feature of the species.

Ashland
May 2019
Leaves have 7-9 leaflets.

Ashland
May 2019
Fringed stipules are another distinguishing feature of this species.