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North American flora - New York Botanical Garden (New York Botanical Garden, 1920)

North American flora - New York Botanical Garden (New York Botanical Garden, 1925)

North American flora - New York Botanical Garden (New York Botanical Garden, 1926)

North American flora - New York Botanical Garden (New York Botanical Garden, 1927)

North American flora - New York Botanical Garden (New York Botanical Garden, 1931)

North American flora - New York Botanical Garden (New York Botanical Garden, 1939)

North American flora - New York Botanical Garden (New York Botanical Garden, 1940)

North American flora - New York Botanical Garden (New York Botanical Garden, 1935)

North American flora - New York Botanical Garden (New York Botanical Garden, 1937)

North American flora - New York Botanical Garden (New York Botanical Garden, 1916)

North American flora - New York Botanical Garden (New York Botanical Garden, 1918)

North American flora - New York Botanical Garden (New York Botanical Garden, 1932)

North American flora - New York Botanical Garden (New York Botanical Garden, 1905)

North American flora - New York Botanical Garden (New York Botanical Garden, 1908)

North American flora - New York Botanical Garden (New York Botanical Garden, 1913)

North American flora - New York Botanical Garden (New York Botanical Garden, 1928)

North American flora - New York Botanical Garden (New York Botanical Garden, 1919)

North American flora - New York Botanical Garden (New York Botanical Garden, 1944)

North American flora - New York Botanical Garden (New York Botanical Garden, 1914)

North American flora - New York Botanical Garden (New York Botanical Garden, 1938)

North American flora - New York Botanical Garden (New York Botanical Garden, 1922)

North American flora - New York Botanical Garden (New York Botanical Garden, 1915)