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x 
Remarks on Cypripedium. | 
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tridentata. | 
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BOOKS AND ARTICLES WITH DESCRIPTIONS AND 
ILLUSTRATIONS. 
Botanique Nova Genera. A. Von Humboldt. 
Paris, 1815 
British Flower Garden. Robert Sweet. 
tst and 2nd series, London, 1823-31 
Flora North America. W. P. C. Barton, M.D. 
Philadelphia, 1821. 
Flora Boreali Americana. Sir W. J. Hooker. 
London, 1840 
Flore des Serres Louis Van Houtte. 
Ghent, 1854-5. 
Illustrations of Orchidaceous Plants. Thos. Moore. 
London, 1857. 
