Nuphar, [151]

Nursery for London Parks, [118]

Nymphæa, [151]

Œnothera Lamarkiana, [4]

Omphalodes, [151]

Omphalodes verna, [10]

Onopordon, [151]

Orchard Wild Garden, [65]

Ornithogalum, [151]

Orobus, [151]