220 The Waterliues. 



On the other hand, N. ortgiesiano-rubra, exhibited at Chiswick in May, 

 1852, by M. van Houtte, and described by Planchon (1852 ad), is in many 

 respects intermediate between the two parent types. The seed was 

 obtained in the summer of 1850 by M. Ortgies in Van Houtte's aquaria, 

 by removing the stamens from a flower of N. rubra and dusting the stigma 

 with pollen of "A 7 ", ortgiesiana." The comparison of hybrid and parents 

 is well shown in Planchon's parallel column descriptions. The hybrid has 

 bright rose-pink flowers, but they open wide as in N. ortgiesiana. The 

 styles are yellow, washed with red in N. ortgiesiana, reddish orange in the 

 hybrid, dark brownish red in N. rubra. The color of the stamens and 

 upper surface of the leaves is fairly intermediate, but the under surface of 

 the leaf and the character of the stigma are as in N. rubra. The robust 

 temperament of N. ortgiesiana is reproduced in the hybrid, but it is more 

 rloriferous than either parent, probably because no strength is used up in 

 the production of seed. In short, N. ortgiesiano-rubra is a well-marked 

 hybrid. Several other hybridizations are recorded by Planchon (1. c.) as 

 productive of seed in 1852, but no further results reached the public. 



In 1853 M. Bouche, Inspector of the Royal Botanic Garden of Berlin, 

 obtained another hybrid, named by Planchon (1854) N. boucheana. It is 

 to all appearance intermediate between N. lotus and N. ortgiesiano-rubra, 

 but is of the same parentage as the latter. A slightly different form of 

 N. lotus, viz., N. dentata, was used as pollen parent. The pale pink petals 

 bordered with pure pink, the yellow stamens, and the bright green leaves 

 show a preponderating influence of N. lotus. The sterility of N. boucheana 

 attests its hybrid origin. 



N. kewensis was next to appear. It was published in Gardeners' 

 Chronicle in 1887 (p. 366), and in Botanical Magazine in April, 1888 

 (tab. 6988). The cross was made at Kew in 1885 by Mr. Watson, with 

 N. lotus as seed parent and pollen of N. devoniensis. The hybrid has a 

 large number of broad petals of an even rosy pink all over ; the stamens 

 are orange colored ; the leaves are pure dark green above. In recent 

 years, crossing and re-crossing has been carried on in this group, espe- 

 cially in America, until every shade of color may be had between the white 

 and red types ; differences are also noted in shape of petal, size of flower, 

 and color of leaf. They are propagated readily and quite accurately from 

 the tubers, and names have been given to every distinguishable form. 

 N. ortgiesiano-rubra and boucheana are not found under those names, but 

 very similar plants are cultivated. The name kewensis is still retained, 

 though the original plant "died without issue"; the present stock was 



