126 SEGREGATION OF CHARACTERS. Chap. XL 



halves exactly defined. The tree was a grafted one, and Mr. La 

 louche thinks that the branches which bore this curious apple 

 sprung from the point of junction of the graft and stock : had this 

 fact been ascertained, the case would probably have come into the 

 class of graft-hybrids already given. But the branch may have 

 sprung from the stock, which no doubt was a seedling. 



Prof. H. Lecoq, who has made a great number of crossings 

 between the differently coloured varieties of Mirabiiis jalapa™ 

 finds that in the seedlings the colours rarely combine, but form 

 distinct stripes ; or half the flower is of one colour and half of a 

 different colour. Some varieties regularly bear flowers striped with 

 yellow, white, and red ; but plants of such varieties occasionally 

 produce on the same root branches with uniformly coloured flowers 

 of all three tints, and other branches with half-and-half coloured 

 flowers, and others with marbled flowers. Gallesio 123 crossed recipro- 

 cally white and red carnations, and the seedlings were striped; but 

 some of the striped plants also bore entirely white and entirely red 

 flowers. Some of these plants produced one year red flowers alone, 

 and in the following year striped flowers ; or conversely, some plants, 

 after having borne for two or three years striped flowers, would 

 revert and bear exclusively red flowers. It may be worth mention- 

 ing that I fertilised the Purple bwtet-pea (Lathyrus odoratus) with 

 pollen from the light-coloured Painted Lady : seedlings raised from 

 the same pod were not intermediate in character, but perfectly 

 resembled either parent. Later in the summer, the plants which 

 had at first borne flowers identical with those of the Painted Lady, 

 produced flowers streaked and blotched with purple ; showing in 

 these darker marks a tendency to reversion to the mother- variety. 

 Andrew Knight m fertilised two white grapes with pollen of the 

 Aleppo grape, which is darkly variegated both in its leaves and 

 fruit. The result was that the young seedlings were not at first 

 variegated, but all became variegated during the succeeding sum- 

 mer; besides this, many produced on the same plant bunches of 

 grapes which were all black, or all white, or lead-coloured striped 

 with white, or white dotted with minute black stripes ; and grapes 

 of all these shades could frequently be found on the same foot- 

 stalk. 



I will append a very curious case, not of bud-variation, but of two 

 cohering embryos, different in character and contained within the 

 same seed. A distinguished botanist, Mr. G. H. Thwaites, 125 states 

 that a seed from Fuchsia coccinea fertilised by F.fulyens, contained 

 two embryos, and w r as " a true vegetable twin." The two plants pro- 

 duced from the two embryos were " extremely different in appear- 

 ance and character," though both resembled other hybrids of the 



122 ' Geograph. Bot. de PEurope,' m ' Transact. Linn. Soc.,' vol. ix. 

 torn, iii., 1854, p. 405 ; and * De la p. 268. 



Fecondation,' 1862, p. 302. 125 ' Annals and Mag. of Nat. Hist.,' 



123 ' Traite du Citrus,' 1811, p. 45. March, 1848 



