Herbarium sheet, black mustard, Brassica nigra, found at the foot of Shankin Chine, Shanklin, Isle of Wight, 1839

Herbarium sheet, black mustard, Brassica nigra, found at the foot of Shankin Chine, Shanklin, Isle of Wight, 1839
Herbarium sheet, black mustard, Brassica nigra, found at the foot of Shankin Chine, Shanklin, Isle of Wight, 1839