Hybrids and Garden Varieties. 



227 



Leaves dull purplish violet beneath, less brilliant than in N. zanzibariensis. Self fertile. 

 The types are very much alike, but the hybrid is fairly intermediate. Raised in the 

 Botanic Garden of the University of Pennsylvania from seed obtained in 1900; flowered 

 1901. Sepals 4, petals 32, stamens 225, carpels 32. N. stellata eastoniensis (Gar- 

 den and Forest p." 475) appears to belong here, the cross having been effected by in- 

 sects. It is described as having steel-blue flowers, with less of the stellate form, and 

 leaves " more deeply toothed " than the type. It was raised by C. Blomberg, gardener 

 to O. Ames, North Easton, Mass., from seed obtained in 1895 from " N. stellata" 

 (doubtless N. capensis) ; flowered 1896. 



Fio. 81. Nymphaea " Wm. Stone." Sepal, petals, stamens, section of ovary. 

 Two-thirds natural size. 



7. N. elegans X zanzibariensis (Plate XXVIII; Fig. 80). Flowers light blue 

 with a violet tint, much bluer than N. elegans. Bud, sepals, and petals shaped as in 

 A/, elegans, but much larger. Length of styles and appendages of stamens intermediate. 

 Leaves colored as in N. zanzibariensis, but intermediate in shape. Sterile. Raised in the 

 Botanic Garden, University of Pennsylvania, from seed obtained in 1900; flowered 

 1901. Sepals 4, petals 31, stamens 150. 



8. N. zanzibariensis X ? (= N. zanzibariensis X capensis, Conard 



1901 a). Leaves as in N. zanzibariensis, but without brown spots above. Flowers rich 

 blue, open from 9 a. m. to 4 or 5 p. m. ; petals and sepals narrower than in N. zanzi- 

 bariensis. Petals 15 to 20, stamens 60 to 100. Very floriferous, but sterile. Cultivated 

 at Horticultural Hall, Fairmount Park, Philadelphia, and formerly at University of 

 Pennsylvania. Said to have been originally obtained from Mr. Tricker. 



9. N. flavo-virens X zanzibariensis (Plate XXIX; Fig. 81) (=N. Greyae, 

 Hort. ; N. Wr.i. Stone Tricker; N. astraea R. M. Grey; N. gracilis purpurea, N. g. 



