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Flora boreali-americana, or, the botany of the northern parts of British America, deel 2, W.J. Hooker (1840)
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Description of the genus Pinus and some other remarkable plants, deel 1, A.B. Lambert (1890) [Ferdinand Bauer]
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The Silva of North America, deel 12, C.S. Sargent (1898)
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Unsere Waldbäume, Sträucher und Zwergholzgewächse, L. Klein (1910)
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Revue horticole, deel 40, L. Descamps-Sabouret (1868)
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Revue horticole, serie 4, deel 67, L. Descamps-Sabouret (1895)
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Revue horticole, serie 4, deel 75 (1903)
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A handbook of Coniferae, W. Dallimore, A. Bruce, G. Lister (1923)
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Gartenflora, deel 37, E. von Regel (1888)
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Traité des arbres et arbrissaux, Atlas, P. Mouillefert (1892-1898)
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North American wild flowers, deel 4, Mary Vaux, Walcott (1925-1927)
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