SYNOPHTY. 67 



of their axes, leaving merely the four cotyledons sepa- 

 rate. A similar adnation has been obberved by the 

 same botanist in Lepidium satimim and Sinapis ramosay 

 as well as in other plants.^ I have met with correspond- 

 ing instances in Antirrhinum majus and in Cratoegus 

 oxyacanthaf in the latter case complicated with the 

 partial atrophy of one of the four cotyledons. It is 

 necessary to distinguish between such cases and the 

 fallacious appearances arising from a division of the 

 cotyledons. M. Morren has figured and described the 

 union of two roots of carro*t {Daucus), which were also 

 spirally twisted. He attributes this union to the 

 blending of two radicles, and applies the term " rhizo- 

 collesy" to this union of the roots. ^ Mr. Thwaites cites 

 a case wherein two embryos were contained in one seed 

 in a Fuclisia, and had become adherent. What is still 

 more remarkable, the two embryos were different, 

 a circumstance attributable to their hybrid origin, 

 the seed containing them being the result of the ferti- 

 lisation of Fuclisia coccinea (quere F. magellanica ?) by 

 the pollen of F. fulgens. 



A. P. De CandoUe, ' Organ Vcget.,' t. ii, p. 72, 

 'BuU. Acad. Belg.,' t. xx, part i, 1852, p. 43. 



. 72, tab. liv, fig. 1. 



