392 ANOMALOUS MODES Chap XI 



by buds to the two parent-forms ; and we have seen in the last chante 



that the species in this genus often cross spontaneously. C^waiJ^ 



Here is another analogous, but doubtful case. A writer in the ' Gardener's d ^ of 



Chronicle ' 10 ° states that an JEsculus rubicunda in his garden yearly r>ro 

 duced on one of its branches " spikes of pale yellow flowers, smaller in 

 size and somewhat similar in colour to those of JE. flava" If as ^ 

 editor believes JEsculus rubicunda is a hybrid descended on one side from 

 JE. flava, we have a case of partial reversion to one of the parent-forms 

 If, as some botanists maintain, 2E. rubicunda is not a hybrid but a 

 natural species, the case is one of simple bud-variation. 



The following facts show that hybrids produced from seed in the 

 ordinary way, certainly sometimes revert by buds to their parent-forms 

 Hybrids between Tropceolum minus and majus 101 at first produced flowers 

 intermediate in size, colour, and structure between their two parents ■ but 

 later in the season some of these plants produced flowers in all respects 

 like those of the mother-form, mingled with flowers still retaining the 

 usual intermediate condition. A hybrid Cereus between C. speciosissimus 

 and phyllanthus, m plants which are widely different in appearance, pro- 

 duced for the first three years angular, five-sided stems, and then 'some 

 flat stems like those of 0. phyUanthus. Kolreuter also gives cases of hybrid 

 Lobelias and Verbascums, which at first produced flowers of one colour 

 and later in the season flowers of a different colour. 103 Naudin 104 raised 

 forty hybrids from Datura Icevis fertilised by D. stramonium ; and three 

 of these hybrids produced many capsules, of which a half, or quarter or 

 lesser segment was smooth and of small size like the capsule of the pure 

 1). Icevis, the remaining part being spinose and of larger size like the 

 capsule of the pure B. stramonium : from one of these composite capsules, 

 plants were raised which perfectly resembled both parent-forms. 



Turning now to varieties. ' A seedling apple, conjectured to be of crossed 

 parentage, has been described in France, 105 which bears fruit, with one 

 half larger than the other, of a red colour, acid taste, and peculiar odour ; 

 the other side being greenish-yellow and very sweet: it is said scarcely 

 ever to include perfectly developed seed. I suppose that this is not the same 

 tree with that which Gaudichaud 106 exhibited before the French Institute, 

 bearing on the same branch two distinct kinds of apples, one a reinette 

 rouge, and the other like a reinette canada jaundtre: this double-bearing 

 variety can be propagated by grafts, and continues to produce both kinds; 

 its origin is unknown. The Eev. J. D. La Touche sent me a coloured 

 drawing of an apple which he brought from Canada, of which half, sur- 

 rounding and including the whole of the calyx and the insertion of the 



Z ' Gard " Chron "' 1851 > P- 406. burgh/ 1781, part i. p. 249. 



Wner, < Bastarderzeugung,' s . 104 « Nouvelles Archives du Museum,' 



549. It is, however, doubtful whether torn. i. p. 49. 



these plants should be ranked as species 10 * L'Herines, Jan. 14, 1837, quoted 



0r l a " etl f- , in Loudon's ' Gard. Mag.,' vol. xiii. p. 



102 Gartner, idem, s. 550. 230. 



103 'Journal de Physique,' torn, xxiii., ios 'Comptes Eendus,' torn, xxxiv., 

 1/83, p. 100. 'Act. Acad. St. Peters- 1852, p. 746. 



