[47] Rev. W. A. Leighton, 'Flora of Shropshire,' p. 497; and Charlesworth's 'Mag. of Nat. Hist.,' vol. i, 1837, p. 30.
[48] Verlot, op. cit., p. 93.
[49] For these several statements, see Loudon's 'Gard. Magazine,' vol. x., 1834, pp. 408, 180; and vol. ix., 1833, p. 597.
[50] These statements are taken from Alph. De Candolle, 'Bot. Géograph.,' p. 1083.
[51] Verlot, op. cit., p. 38.
[52] Op. cit., p. 59.
[53] Alph. De Candolle, 'Géograph. Bot.,' p. 1082.
[54] See 'Cottage Gardener,' April 10, 1860, p. 18, and Sept. 10, 1861, p. 456; 'Gard. Chron.,' 1845, p. 102.
[55] Darwin, in 'Journal of Proc. Linn. Soc. Bot.,' 1862, p. 94.
[56] Hofacker, 'Ueber die Eigenschaften,' &c., s. 10.