HYBRIDS AND GARDEN VARIETIES. 



225 



Section I. Nymphaeae apocarpiae. 

 Subgenus II. BRACHYCERAS. 



1. N. STELLATA X CAERULEA. Mentioned by Caspary (1877) as a sterile hybrid. 



2. N. CAERULEA X CAPENSis (Focke i88i). Raised by Caspary in 1862. It 

 resembles AT. caerulea very closely and is generally sterile, though Caspary succeeded 

 in fertilizing it with pollen of other individuals of the same stock and generation, and 

 obtained a second generation of hybrids. These resembled those of the first genera- 

 tion, except one individual, which produced styles as in N. capensis, and petals of a 

 deeper color than those of either parent. The small violet-black spots on the calyx 

 of N. caerulea are more plentiful in the hybrids. TV. pulcherrima (Tricker 1897) 

 gives every evidence of having this parentage ; the spotting of calyx and under side 



FIG. 78. NympTiaea, Pennsylvania. Sepal, petals, stamens, and section of ovary. Two-thirds natural size. 



of leaf, the purple margin of the leaf beneath, and the conical buds are reproduced as 

 in N. caerulea. The sinuate leaves with acuminate lobes are like those of N. capensis. 

 The color of petals and number of floral leaves are fairly intermediate. Sepals 4, 

 petals 20 to 22, stamens 137 to 140, carpels 24. Sterile. (Fig. 77.) 



3. (N. CAERULEA X CAPENSIS) second generation X CAERULEA (Caspary 1862). 

 Spots of calyx confluent into large areas. 



4. N. CAERULEA X (CAERULEA X CAPENSIS). Raised by Caspary (1862). 



5. N. CAERULEA X ZANZiBARiENSis (= N. Pennsylvania Conard 1901 b) (Plate 

 XXVI; Fig. 78). Flowers light blue, open from 8 a. m. to 5 p. m., that is, combining 

 the earliest and latest limits of the two parents. Spotting of calyx and lower surface of 

 leaves as in N. caerulea. Shape of bud, shape, number and color of floral organs, and 



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