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The Silva of North America, deel 4, C.S. Sargent (1892)
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A guide to the trees, A. Lounsberry, A. Rowan (1900)
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Plantarum novarum vel minus cognitarum, J.G. Zuccarini (1832-1847)
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Revue horticole, serie 4, deel 60, L. Descamps-Sabouret (1888)
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Revue horticole, serie 4, deel 63, L. Descamps-Sabouret (1891)
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Revue horticole, serie 4, deel 65, L. Descamps-Sabouret (1893)
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