Rubus bifrons Focke
Very closely related and often interpreted to include R. armeniacus Focke, both have common name Himalayan blackberry, is distinct from R. ulmifolius Schott (Stems glaucous, terminal leaflet of new stems oblong to narrowly obovate, uniformly fine toothed) in stems not being glaucous, terminal leaflet of new stems widely elliptic to obovate, margins unevenly coarsely toothed.
Photographed from Tahoe California, 4-8-2017
Dr. Gurcharan Singh
Retired Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.