138 



THE WATERLILIES. 



Submerged leaves from small tuber 2 or 3 ; first one ovate, acute, or oftener 

 triangular-hastate with acute apex and angles ; second leaf much larger, angles slightly 

 rounded, lobes long and narrow, widely diverging, thin and crisped or even twisted. 

 First floating leaf ovate, abruptly acuminate, broadest opposite the insertion of the 

 petiole, slightly crenulate; sinus deep, margins straight or slightly curved, slightly 

 divergent or touching or overlapping, angles narrowly rounded ; upper surface green 

 with a few brown blotches, especially near the margin; under surface green, blotched 

 with brown. 



Leaf of mature plant narrowly peltate (1.2 to 1.9 cm.), orbicular-ovate, 30 to 

 45 cm. in diameter, deeply and irregularly sinuate-dentate, with obtuse or rounded teeth 



FIG. 54. yympjiaca flaro-^irens : a, sepal; b, petal of outermost whorl; c, petal of second 

 whorl ; rf, petal of third whorl ; e, outer stamen ; /, inner stamens ; y, vertical section of ovary. 

 Natural size. 



1.2 cm. long and 2 cm. apart, rarely nearly entire; pea -green above, paler below; veins 

 prominent beneath, primary nerves 7 to 9 on each side; length of principal area: 

 radius of leaf = i : 1.6 to 1.75. Sinus, depth: length of leaf == I : 2.5 to 2.8; margins 

 more or less convex, divergent or overlapping; angles rounded. Petiole terete, 1.2 cm. 

 in diameter, 60 to 150 cm. long. 



Rhizome (tuber) erect, stout, 3.8 cm. long by 2.9 cm. thick to 21 cm. long by 

 10 cm. thick ( ! ), brownish-black, very rough with projecting leaf cushions, each capped 

 by the dried base of the petiole and marked on the under side with root scars ; upper 



