tab. ix.

[31] 'El. Ter. Veg.,' p. 254.

[32] 'Bull. Soc. Bot. Fr.,' 1857, p. 451.

[33] 'Bull. Acad. Belg.,' vol. xix, part ii, p. 335.

[34] 'Bull. Soc. Bot. Fr.,' 1860, p. 25.

[35] 'Bull. Soc. Bot. Fr.,' 1861, p. 147.

[36] 'Bull. Acad. Belg.,' vol. xviii, part ii, p. 498.

[37] See also Prillieux, 'Bull. Soc. Bot. Fr.,' 1861, p. 195.

[38] 'Mem. Acad. Toulouse,' 5th Series, vol. iii.

[39] Linnaea, vol. ii. p. 607.

[40] 'Journal Roy. Hort. Soc.,' new ser., vol. i. 1866, p. 200.

[41] 'Bull. Soc. Bot. Fr.,' 1861, p. 159.

[42] Ibid., 1859, p. 467.

[43] 'Flora,' 1858, p. 65, tab. ii.

[44] C. Morren. 'Bull. Acad. Belg.,' vol. xv (Fuchsia, p. 89); vol.
xviii, p. 591. (Lobelia, p. 142); vol. xix, p. 352; vol. xx, p. 4.

[45] 'Bull. Soc. Bot. Fr.,' vol. vii, p. 625.

[46] Cramer, 'Bildungsabweichungen,' p. 56, tab. vii, fig. 10, figures a
case wherein the two central flowers of the capitulum of _Centaurea
Jacea_ were united together.

[47] 'Bull. Bot.' tab. iii, figs. 4-6.

[48] 'Mem. greffe Ann. Science Nat.,' ser. i, t. xxiv, p. 334.

[49] "Mespilus portentosa." Poit. et Turp., 'Pomol. Franc.,' liv, xxxi,
p. 202, pl. 202.

[50] Duchesne, 'Hist. Nat. Frais.,' p. 79.

[51] De Cand., 'Phys. Veget.,' tom. ii, p. 781.

[52] Sched. de monstr. plant. 'Act. Helv.,' tab. i, fig. 8.

[53] 'Mem. greffe,' loc. cit., tab. xxiv, p. 334.

[54] 'Bull. Soc. Bot. Franc.,' 8, pp. 73 and 351, tab. ii; and Roese.
'Bot. Zeit.,' x, p. 410.

[55] _Nymphaea lutea_, _AEsculus Hippocastanum_, &c. See Moquin, 'El.
Ter. Veg.,' p. 277.

[56] C. Martins, 'Promenade Botanique,' p. 8.

[57] 'Ann. Sc. Nat.,' t. xix, 1843, p. 141, tab. iv.

[58] 'Ann. Nat. Hist.,' ser. 2, vol. ix, tab. xvi. 'Phytologist,' 1857.
p. 352, &c.

[59] Quoted from the 'Revue Hortic.' in 'Gard. Chron.,' 1866, p. 386.

[60] Senebier, 'Phys Veget.,' t. iv, p. 426. The same author also cites
Romer as having found two plants of _Ranunculus_, from the stem of which
emerged a daisy. As it is not an uncommon practice to stick a daisy on a
buttercup, it is to be hoped no hoax was played off on M. Romer.

[61] 'El. Ter. Veg.,' p. 289.

[62] An instance of this kind is cited in Dr. Robson's memoir of the
late Charles Waterton, from which it appears that two trees, a spruce
fir and an elm, were originally planted side by side, and had been
annually twisted round each other, so that they had in places grown one
into the other, with the result of