238 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Variability chiefly in the colour and slightly in the form of 

 the pitchers was observable amongst the progeny derived from a 

 single cross in the earliest experiments made, a variability that 

 has been still more pronounced in the results of later crosses, 

 especially when one or both parents are themselves hybrids. 

 Owing to this cause and the imperfect record of some of the 

 earlier crosses, some of the statements made from time to time 

 respecting parentage cannot be vouched for. Although upwards 

 of forty hybrids are enumerated, it is certain they do not repre- 

 sent so many distinct crosses ; in fact, a considerable number of 

 them are varietal forms that appeared amongst the progenies 

 obtained from crosses between the same pair of parents. 



The following may be accepted as genuine hybrid types, that 

 is to say, the pitchers of these hybrids, the most reliable organ 

 for discrimination, bear evidence in shape, colour, size, &c, 

 of their having been derived from the parentage assigned to 

 them : — 



1. Dominii from Bafflesiana and an unnamed species from 

 Borneo (Fig. 51). 



To this type must be referred intermedia and one or two 

 more that have since disappeared from cultivation. 



2. Hybrida from Khasiana, then in cultivation as distilla- 

 toria, and an unnamed species from Borneo. 



To this must be referred hybrida metadata, Courtii, and 

 rubro-maculata as varieties. 



3. Sedenii from Khasiana and an unnamed species (Fig. 48). 



4. Master siaiia from Khasiana and sanguinea (Fig. 50). 



5. Cylindrica from hirsuta and Veitchii. 



6. Bufescens from hirsuta and hybrida x var. Courtii ; a 

 secondary hybrid. 



7. Dicksoniana from Bafflesiana and Veitchii (Fig. 52). 



8. Wittei from an unnamed species and Curtisii. 



9. Mixta from Curtisii and Northiana. 



10. Tiveyi from Veitchii and Curtisii superba (Fig. 53). 



The progenies obtained from these ten crosses were raised 

 at our Chelsea nursery. 



1 1 . Morganice from Sedenii or Phyllamphora and Hooker iana, 

 a hybrid of American origin raised by Taplin (Fig. 54). 



