Rubus bifrons Vest ex Tratt. × Rubus laciniatus Willd.

Washington: King County: North end of Lincoln Park, 0.75 air kilometers north-northeast of Point Williams, Seattle. Elev. 13 ft.
47° 32.2' N, 122° 23.7' W
Thickets, base of steep west-facing slope above beach, partial shade, with putative parents, Prunus emarginata, Acer macrophyllum, Corylus, Rubus ursinus, R. spectabilis. Arching shrubs 2 meters tall, with foliage intermediate. Phenology: Fruits.

Arthur L. Jacobson 25729, Aug 5, 2011
WTU, Accession: 388158