[444] 'Arch. Bot.,' ii, p. 300, tab. xvi, f. 11.
[445] 'Seemann's Journal of Botany,' v, p. 318, tab. lxxii, figs. A 4, 4 a.
[446] "Monstr. Veg.," in 'Neue Denkschrift,' p. 17, tab. vii.
[447] 'Flora,' t. viii, 1825, p. 736.
[448] 'Mem. Soc. d'Hist. Nat.,' ii, 1, p. 212, tab. iii.
[449] 'Bull. Soc. Bot. Fr.,' t. vii, 1860, p. 26.
[450] 'Beitr. Morphol. und Biol. Orchid.,' quoted by Cramer; 'Bildungsabweich,' p. 9.
[451] Masters, 'Journ. Linn. Soc.,' viii, p. 207. See also Rodigas, 'Bull. Soc. Bot. Belg.,' iv, p. 266, for similar changes in Cypripedium Hookeræ.
[452] Kirschleger, 'Flora,' 1844, p. 131.
[453] 'Bildungsabweich,' p. 11, tab. xiv, f. 3.