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North American flora - New York Botanical Garden (New York Botanical Garden, 1907)

North American flora - New York Botanical Garden (New York Botanical Garden, 1924)

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

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, 1959)

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

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