[356] See Goethe, 'Ueber die spiral Tendenz.'
[357] See Darwin "On Climbing Plants," 'Journ. Linn. Soc. Botany,' vol. ix, p. 5.
[358] 'Ephem. Nat. Cur.,' dec. 2, ann. 1, 1683, p. 68, fig. 14.
[359] 'Ann. des Scienc. Nat.,' third series, vol. i, 1844, p. 292.
[360] 'Flora' Feb. 4, 1858, p. 69, tab. ii, f. 3, and also 'Flora,' 1860, p. 737, tab. vii, f. 9.
[361] 'Bull. Acad, Belg.,' t. xvii, p. 196, "Lobelia," p. 53, c. tab.
[362] Moore, 'Nature-printed Ferns,' 8vo edition, vol. ii, p. 183.
[363] 'Bull. Soc. Bot. Fr.,' 1860, vol. vii, p. 461. See also Naudin, 'Ann. Sc. Nat.,' 4 ser., t. iv, p. 5. Clos, 'Bull. Soc. Bot. Fr.,' t. iii, p. 546.
[364] London's 'Magazine Nat. Hist.,' vol. ii, p. 463.
[365] C. Morren, 'Bull. Acad. Belg.,' 1852, t. xix, part iii, p. 444.