TAXONOMY NYMPHAEA CAPENSIS. 



159 



MEASUREMENTS. 



flowers the carmine-purple on the back of the outermost anthers extends down to the 

 middle of the filament ; the inner side of the filament is also suffused with blue above. 

 Pollen yellow to the naked eye, colorless under the microscope with transmitted light ; 

 grains flattened-spherical, smooth, with large nucleus. Appendage of outermost sta- 

 mens lanceolate, about 7 times as long as broad, with a swelling on inner side which 

 grows to a keel on median stamens, and on innermost stamens the appendage is thicker 

 than wide. Anthers bent inward, making an angle with the filament. Carpels 15 to 

 31 ; styles triangular, breadth : length = i : 2.5 to 2.8, tapering above, acute, straight and 

 erect on first day of opening, afterward bending gradually inward until in fruit they 

 are hook-shaped. Stigma yellow, its rays short, triangular. Fruit yellowish, depressed- 

 spherical, 56 mm. high by 67 mm. in diameter, covered by the enlarged, thick and 

 leathery sepals, containing several thousand seeds. Seed dull brown, elliptic, rather 

 long, with papillae at one end; diameter : length = 0.75 mm. : 1.2 mm.; =0.8 mm.: 

 1.45 mm., with 15 to 24 interrupted rows of short hairs, the rows at one end often 

 alternate with those at the other. 



Germination immediate, or after drying. First leaf of seedling filiform. Second 

 leaf broadly ovate, sub-acute, rather abrupt at base, 1.3 cm. long by 0.8 cm. wide. 

 Third leaf orbicular-ovate, truncate near its junction with the petiole, I.I cm. long 

 by i.o cm. wide. Fourth leaf round-reniform, with shallow, rounded sinus and 

 rounded lobes, 1.6 cm. long by 1.4 cm. wide. 

 Late submerged leaf orbicular, fissi-cor- 

 date, 3.8 cm. long by 3.5 cm. wide, entire, 

 rounded at apex; sinus 1.9 cm. deep, mar- 

 gins convex, divergent, angles rounded. 

 First floating leaves orbicular, 2 to 2.5 cm. 

 in diameter, entire ; sinus deep, closed, its 

 margins straight and touching, angles meet- 

 ing and completing the circular outline of 

 the leaf; upper surface more or less thickly 

 blotched with irregular reddish-brown 

 spots ; under surface pale green, with a dis- 

 tinct violet tinge all around near the mar- 

 gins. The later leaves have less and less of 

 brown spotting above, and gradually acquire 

 the characteristic margin and color beneath 

 as the plant approaches maturity. 



Submerged leaves from sprouting tuber 2 or 3. First leaf deltoid, with straight 

 sides and curved base ; apex acute. Second leaf broadly orbicular-cordate, with broad, 

 open, rounded sinus and narrowly rounded angles. Third leaf similar to second, 

 larger, with narrower, more acute sinus. First floating leaf orbicular to orbicular-ovate, 

 entire, blotched more or less densely with red-brown above, under surface red on a 

 green ground. (This paragraph describes the growth from a small tuber of the rosea 

 form.) 



Leaf of mature plant 15 to 60 cm. in diameter, circular or slightly elliptic, nar- 

 rowly peltate, length of pelta: depth of sinus = i : 9 to 17; texture rather firm and 



